Equipment profile · Sources compared
Jannik Sinner String Tension & Setup
Hawk Touch, the 61 vs 62 lb question, and the distinction between Speed endorsement and reported pro-stock equipment.
By String Tension AI · Published · Research checked
This is a source-based equipment profile, not an official Jannik Sinner page. Professional setups can change between string jobs and tournaments.
Jannik Sinner is currently reported with a full bed of HEAD Hawk Touch 1.30 mm at approximately 61.7 lbs (28 kg). HEAD lists Sinner as a Hawk Touch endorser and associates him with the Speed racquet family. The more specific details come from specialist equipment reporting: Racket Fit and Tennisnerd identify a customized HEAD TGT 301.4 pro-stock frame and report Hawk Touch 1.30 at around 28 kg. This does not establish that he plays a stock retail Speed Pro or Speed MP. The 28 kg figure is a reported stringing-machine reference setting that can change between string jobs and conditions. Our 61.7 lb display is a unit conversion, not extra source precision, a later app reading, or a permanent specification.
Evidence: HEAD · HEAD · Racket Fit · Tennisnerd
Jannik Sinner’s setup at a glance
- Player
- Jannik Sinner
- String
- HEAD Hawk Touch
- Gauge
- 1.30 mm / 16g
- Construction
- Reported full bed
- Reported mains
- ≈61.7 lbs (28 kg)
- Reported crosses
- ≈61.7 lbs (28 kg)
- Reported pro frame
- HEAD TGT 301.4
- Brand family
- HEAD Speed
- Evidence status
- Reported setup; not a permanent specification
- Research checked
- 2026-09-07
View all 69 sourced pro string setups →
What strings does Jannik Sinner use?
HEAD Hawk Touch 1.30 mm in a reported full bed. HEAD’s product page supplies the official endorsement; Racket Fit and Tennisnerd supply the reported personal gauge. A product offered in 1.30 does not, by itself, prove that an endorser selects that gauge.
What tension does Jannik Sinner use?
The current synthesis is approximately 61.7 lbs (28 kg) in the mains and 61.7 lbs (28 kg) in the crosses. These are reported reference settings during stringing. 28 kg is the source value; 61.7 lbs is our deterministic conversion, not measurement precision.
Is Sinner’s tension 61 lb or 62 lb?
The commonly reported base value is about 28 kg. Our conversion is 28 × 2.2046226218 = 61.7 lb to one decimal. A 61 lb label can reflect truncation or loose rounding, while normal whole-pound rounding produces 62 lb.
Racket Fit and Tennisnerd display 61 alongside 28 kg; The Pandr displays 62 alongside 28 kg. The apparent disagreement is mostly unit rounding. We preserve the shared kilogram value, rather than treating those pound labels as evidence of separate jobs. None of these labels establishes an exact permanent machine setting.
Is Sinner’s setup a full bed or a hybrid?
Tennisnerd’s explicit full-bed report supports Hawk Touch throughout the stringbed. That is why our public string record now names the same string, gauge, and reference tension for both directions, replacing its earlier unreported cross fields.
We do not infer an alternative cross string from a photograph. The classification is reported polyester in both directions, not manufacturer confirmation of every string job.
What do the current sources agree on?
The principal string reports agree on the kilogram setting. The manufacturer establishes narrower facts than the specialists, so the table leaves personal gauge and tension unstated in the HEAD row. Matching numbers should not be mistaken for independent inspections.
Scroll the table sideways to compare all source details.
| Source | String | Gauge | Reference tension | Racquet detail | Evidence level |
|---|---|---|---|---|---|
| HEAD product / athlete | Hawk Touch endorsement | 1.30 offered; personal gauge not stated | Not stated | Speed family | Official manufacturer association |
| Racket Fit | Hawk Touch | 1.30 mm | About 61.7 lbs (28 kg); source displays 61 lbs | TGT 301.4; 302 g unstrung | Equipment report |
| Tennisnerd player profile | Hawk Touch, full bed | 1.30 mm | About 61.7 lbs (28 kg) | TGT 301.4; 302 g / 32.3 cm / 296 SW unstrung | Specialist report; updated May 2026 |
| Tennisnerd ATP Top 50 | Hawk Touch | Not restated in article body | About 61.7 lbs (28 kg) | Not specified for this comparison | August 2026 equipment snapshot |
What racquet does Jannik Sinner actually use?
HEAD officially associates Sinner with the Speed family. Racket Fit and Tennisnerd identify his underlying frame more specifically as a customized HEAD TGT 301.4 pro stock. Those are distinct evidence levels: the code is specialist-reported, not an official HEAD-confirmed Sinner specification.
Does Jannik Sinner use the Speed Pro or Speed MP?
Neither current retail model should automatically be described as his personal match frame. HEAD’s Speed-family marketing includes Sinner and warns that professional players may use different racquets from those shown. Retail endorsement imagery cannot resolve the pro-stock question.
The MP connection has a more specific reported history: Tennisnerd relates TGT 301.4 to an older Graphene Touch Speed MP platform. That is different from claiming he plays a stock Speed MP 2026, or substituting retail Speed Pro specifications such as its pattern.
What is the HEAD TGT 301.4?
TGT 301.4 is the pro-stock code specialist sources report for the underlying frame. Tennisnerd connects that code with Graphene Touch Speed MP. The label does not establish an exact layup recipe, factory, production tolerance, or retail-equivalent identity.
Cosmetics, platform history, and the customized frame are separate questions. We use “reported TGT 301.4” to preserve that uncertainty rather than turn a specialist identification into a consumer specification.
Reported Sinner pro-stock specs
Racket Fit and Tennisnerd agree on the unstrung snapshot below. Tennisnerd attributes those numbers to a specialist forum source; we have not inspected or weighed a personal frame. The Tennis Insider and The Pandr corroborate the reported head size and pattern.
Scroll the table sideways to compare all source details.
| Field | Reported value | Evidence |
|---|---|---|
| Frame | HEAD TGT 301.4 | Racket Fit / Tennisnerd |
| Unstrung mass | 10.7 oz (302 g) | Racket Fit / Tennisnerd |
| Unstrung balance | 32.3 cm / 323 mm | Racket Fit / Tennisnerd |
| Unstrung swingweight | 296 | Racket Fit / Tennisnerd |
| Head size | 100 sq in | The Tennis Insider / The Pandr |
| String pattern | 16x19 | The Tennis Insider / The Pandr |
Other reports publish different strung masses and swingweights. We do not combine those with this unstrung snapshot, subtract an assumed string weight, or suggest the numbers describe every frame across his career.
How that differs from the current retail Speed MP 2026
Current retail Speed MP 2026 is a manufacturer context link, not an offer to buy Sinner’s exact racquet. The comparison keeps weight basis explicit and leaves unsupported cells unfilled.
Scroll the table sideways to compare all source details.
| Field | Reported Sinner pro stock | Retail Speed MP 2026 | Evidence |
|---|---|---|---|
| Model | TGT 301.4 | Speed MP 2026 | Racket Fit / HEAD |
| Unstrung weight | 10.7 oz (302 g) | 10.6 oz (300 g) | Racket Fit / HEAD |
| Unstrung balance | 323 mm | 320 mm | Racket Fit / HEAD |
| Head size | 100 sq in | 100 sq in | The Tennis Insider / The Pandr / HEAD |
| Pattern | 16x19 | 16x19 | The Tennis Insider / The Pandr / HEAD |
| Beam | Not established by the pro snapshot used here | 23 mm | HEAD |
| Unstrung swingweight | 296 reported | Not published on the HEAD page checked | Racket Fit / HEAD |
| Layup / customization | Exact construction not established | Retail specifications do not establish the pro build | HEAD / Tennisnerd |
Similar numbers do not prove identical mold, layup, weighting, swingweight, customization, or frame construction. A shared family name is not a personal equipment measurement.
HEAD Hawk Touch 1.30: what the manufacturer says
HEAD’s product positioning: HEAD classifies Hawk Touch as a Tour string, describes a round monofilament, and emphasizes touch and control. Its offered gauges include 16g/1.30 mm. Those are product claims, not proof of a performance effect for Sinner.
The polyester classification comes from the equipment reporting. Neither that label nor the manufacturer’s positioning establishes medical safety, guaranteed comfort, or a quantified accuracy improvement.
How unusual is 28 kg on the current pro tour?
In Tennisnerd’s August 25, 2026 top-50 analysis, Sinner’s reported 61.7 lbs (28 kg) sits above the roughly 51.8 lbs (23.5 kg) average among players with reliable tension data. That is a source-specific sample statistic, not a census of the entire tour or a recommended target.
The report establishes no definitive personal explanation for his choice. It does not show that the setting creates his accuracy or that another player will gain control by copying it.
Should you copy Jannik Sinner’s string tension?
There is no reason to copy 28 kg solely because Sinner is reported to use it. Your frame, technique, ball speed, string choice, restring routine, and preferences may differ. A high reported reference tension in a full bed of 1.30 mm monofilament is context, not a universal target.
Use frame and string manufacturer guidance alongside your current setup, comfort, and control preferences. Make small controlled changes and compare your own results. The starting-tension calculator and string tension chart can help organize that decision.
Track your own setup instead of copying a pro
A pro setup is useful context. Your useful number comes from your own racquet history. Save your racquet, string setup, and reference tension in String Tension AI. Measure after stringing to establish a fresh-string baseline, then repeat under similar conditions as you play.
Record playing hours and feel, track change, and compare future jobs with your own baseline. Follow the repeatable measurement workflow. This does not imply Sinner uses the app or that the app can identify his professional frame.
Jannik Sinner string setup FAQ
What strings does Jannik Sinner use?
HEAD Hawk Touch 1.30 mm, reported throughout the stringbed. HEAD establishes the endorsement; specialist reports establish the personal setup details.
What string tension does Jannik Sinner use?
Approximately 61.7 lbs (28 kg) in both directions, as a reported reference setting. It is not a permanent specification.
Does Jannik Sinner use HEAD Hawk Touch?
HEAD lists Sinner as a Hawk Touch endorser. The equipment reports checked also identify that string.
What gauge string does Jannik Sinner use?
1.30 mm / 16g is the reported gauge. HEAD offers that size but does not specify his personal gauge on its product page.
Is Sinner’s setup a full bed or hybrid?
Current specialist reporting describes a full bed: the same Hawk Touch string in the mains and crosses, rather than a hybrid.
Does Sinner string at 28 kg?
That is the approximate reference setting in the reports checked. The site displays it as 61.7 lbs (28 kg); individual jobs may differ.
Is 28 kg 61 lb or 62 lb?
28 kg converts to 61.7 lb to one decimal. A 61 lb label can reflect truncation or loose rounding, while normal whole-pound rounding produces 62 lb.
Why do some sources say 61 lb and others 62 lb?
The shared source value is about 28 kg. Those whole-pound displays do not by themselves establish different string jobs; we preserve the kilogram value and convert it consistently.
Does Jannik Sinner use the HEAD Speed Pro?
Speed-series marketing is not proof of a retail Speed Pro match frame. Specialist reporting identifies TGT 301.4 underneath the cosmetics.
Does Jannik Sinner use the HEAD Speed MP?
Tennisnerd relates his reported pro-stock frame to the older Graphene Touch Speed MP platform. That does not identify it as a current stock retail Speed MP.
What is Sinner’s actual racquet?
The strongest synthesis here is a specialist-reported customized HEAD TGT 301.4 within the Speed family. HEAD itself establishes the family association, not that pro-stock code.
What is HEAD TGT 301.4?
It is the pro-stock code equipment specialists report for Sinner’s underlying frame. It is not a current HEAD consumer product specification.
What is Sinner’s racquet weight?
Racket Fit and Tennisnerd report 10.7 oz (302 g) unstrung. This is a reported snapshot with a stated weight basis, not the mass of every frame or a strung measurement.
What string pattern does Sinner use?
16x19 is reported for the TGT 301.4 frame by The Tennis Insider and The Pandr. It remains reported geometry, not our inspection of his equipment.
Is Sinner’s racquet the same as the retail Speed MP?
That is not established. Similar head size or pattern cannot prove identical layup, weighting, or customization.
Is Hawk Touch a polyester string?
The equipment reporting classifies the full bed as polyester. HEAD’s own product page describes a round monofilament.
Why does Sinner use such high tension?
The sources establish a reported setup, not a definitive personal explanation. We cannot assign his choice to a particular swing trait or promise a control benefit.
Should I copy Sinner’s 28 kg tension?
There is no reason to copy a number solely because a professional uses it. Start from your frame and string guidance, current setup, and comfort and control preferences; make small controlled changes.
Can String Tension AI measure a racquet strung at 28 kg?
For supported racquet and string setups, the app can estimate installed stringbed tension and track repeatable readings. The reference setting alone does not establish support or guarantee a particular reading.
Should an app reading equal 28 kg / 61.7 lb?
No. A machine setting and a modeled estimate of the finished stringbed describe different states. There is no universal conversion that makes the later app reading equal the reference setting.
How often does Jannik Sinner restring?
The sources checked do not establish a reliable current schedule for his restring frequency.
Does Sinner change tension by tournament?
Professional tension can vary with jobs and conditions, but the sources checked do not establish a tournament-by-tournament tension log for Sinner.
Sources and methodology
We distinguish manufacturer association, specialist equipment reporting, and retail product specifications. Agreement between reports is useful corroboration, but does not prove independent measurements or a permanent setup. The catalog now records the reported full bed. We preserve 28 kg as the source value and derive the one-decimal pound display without manufacturing a tension disagreement. See the parent catalog methodology.
All external evidence below was checked on 2026-09-07. Publication dates are shown only when supplied by the source; an access date is not a claim that an undated page was published that day. No personal racquet was inspected for this profile.
First-party manufacturer evidence
- HEAD: Hawk Touch product and endorsement
Sinner endorsement; available 16g/1.30 option, round monofilament, Tour classification and touch positioning. Does not specify his personal gauge or tension. Accessed 2026-09-07.
- HEAD: Jannik Sinner athlete page
Official Speed-family association and caveat that professional equipment may differ from the model shown. Accessed 2026-09-07.
- HEAD: Speed racquet family
Speed marketing context; professional-player equipment caveat. Accessed 2026-09-07.
- HEAD: Current retail Speed MP 2026
Retail-only specifications: 300 g unstrung, 320 mm balance, 100 sq in, 16x19 and 23 mm beam. Series endorsement does not establish a personal match frame. Accessed 2026-09-07.
Current reported equipment snapshots
- Racket Fit: Pro player tennis setups
Hawk Touch 130 and 28 kg (displayed as 61 lbs); TGT 301.4 under Speed MP Auxetic paint, with 302 g, 32.3 cm and 296 SW unstrung. Does not separately name a cross string. Accessed 2026-09-07.
- Tennisnerd: Jannik Sinner’s Racquet — updated May 4, 2026
Explicit full-bed report around 28 kg. Identifies customized TGT 301.4, relates it to Graphene Touch Speed MP, and attributes 302 g / 32.3 cm / 296 SW unstrung to a specialist forum source. Accessed 2026-09-07.
- Tennisnerd: ATP Top 50 String Setups · Published 2026-08-25
Hawk Touch at 28 kg; about 23.5 kg average within the subset with reliable tension information. Gauge and separate cross setting are not restated in the article body. Accessed 2026-09-07.
- The Tennis Insider: Sinner’s match-used racquet report — updated January 27, 2024
Older match-used equipment report identifies TGT 301.4, 100 sq in and 16x19. Used to corroborate geometry only, not the current unstrung mass. Accessed 2026-09-07.
- The Pandr: What Racquet Does Jannik Sinner Use? · Published 2026-07-10
Further reporting of TGT 301.4 with 100 sq in and 16x19. Its approximate strung mass and swingweight are not substituted for the unstrung snapshot. Accessed 2026-09-07.
String Tension AI public data
- String catalog: dated numeric snapshot
- Racquet catalog: model context and uncertainty notes
- Editorial evidence and source links
The racquet record uses 10.7 oz (302 g), reported pro unstrung, with Racket Fit provenance. Retail weight and strung-weight reports are separate quantities. See the public racquet weight contract for weight basis and source definitions.