Frances Tiafoe walked onto Arthur Ashe Stadium on Friday night wearing flamingo pink from the headband down to the socks, all of it made by Lululemon, who pay him to wear it.
Everything except the shoes.
Those were K-Swiss Ultrashot 4s — a player edition, in bright pink to match the kit, with “Big Foe” printed on the sidewall. Custom-made, court-tested, colour-coordinated to a rival brand’s apparel.
K-Swiss has no contract with him.
That is not a minor footnote. It is one of the strangest and most revealing situations in professional tennis, and it played out in front of the largest audience the sport offers.
What Frances Tiafoe Wore
The full look, as reported by WWD’s Footwear News:
| Item | Brand |
|---|---|
| Kit, socks, headband | Lululemon, flamingo pink |
| Shoes | K-Swiss Ultrashot 4, player edition |
| Shoe detail | “Big Foe” on sidewall, bright pink |
| Contract status | Lululemon since January 2025; no K-Swiss deal |
Tiafoe signed with Lululemon in January 2025 and has been the most visible thing at Flushing Meadows all fortnight because of it. The pink is genuinely unmissable — deliberate, total, right down to accessories.
And then the shoes come from somewhere else entirely.
What Ben Shelton Wore
Shelton played in On’s Lights Out collection — apparel and footwear from the Swiss brand that has spent the past few years turning a cushioning gimmick into a credible performance business.
It is a cleaner arrangement: one brand, head to toe, under contract. Which is exactly what makes the other side of the net so interesting.
Why Frances Tiafoe Doesn’t Wear Lululemon Shoes
Here is the honest reading, and it is not flattering to the brand paying him.
Lululemon has a footwear programme. It launched in 2022 and it has struggled — a handful of running and training silhouettes that have not made a meaningful dent, and nothing resembling a tour-grade tennis shoe.
Tennis footwear is unusually demanding. Hard-court movement is lateral, violent and repetitive. A shoe needs a reinforced chassis, toe-drag protection, a shank stiff enough to resist torsion, and an outsole that survives abrasion that would shred a running shoe in a fortnight. The Ultrashot 4 is built around exactly that — K-Swiss specifies a reinforced lightweight chassis, DragGuard 7.0 toe protection and a high-abrasion rubber outsole, sold with a six-month outsole durability guarantee.
No top-20 professional is going to risk an ankle in a shoe that does not exist yet.
So Lululemon can dress Tiafoe. It cannot shoe him. And because apparel and footwear deals are negotiated separately in tennis, he is free to wear whatever keeps him upright.
K&B Take: This is the clearest demonstration you will get of why footwear is the hard part. Lululemon built a $50 billion apparel business and still cannot produce a shoe its own sponsored athlete will play a Grand Slam semifinal in.
The Free Placement Nobody Planned
Now flip it around, because this is the part worth genuinely admiring.
K-Swiss got the following, at no cost:
- Its shoe on court in a US Open semifinal
- On Arthur Ashe Stadium, in Friday-night primetime
- In a historic match — the first Open-era US Open semifinal between two Black American men
- In a custom pink that makes the shoe the single most visible object in the frame
- With the brand’s own nickname branding, “Big Foe”, on the sidewall
- Worn by a player whose kit sponsor is a direct competitor in athletic apparel
There is no rate card for that. If K-Swiss had tried to buy this placement, a top-20 American with Tiafoe’s profile and charisma would command a substantial multi-year footwear contract.
Instead the brand is making him custom colourways to match another company’s clothes, for nothing.
That is either the best-run guerrilla marketing operation in tennis or an extraordinary piece of luck. Reading the timing, it looks a lot like the former.
K-Swiss Picked a Remarkable Week for This
Three things are true about K-Swiss right now, and together they stop this looking like an accident.
It is the brand’s sixtieth anniversary. K-Swiss was founded in California in 1966 by two Swiss brothers, Art and Ernie Brunner, and its first product — the Classic — was among the first all-leather tennis shoes ever made. Sixty years is the kind of milestone that comes with a marketing budget.
It just became the ATP Tour’s official shoe partner. That deal was signed the week before this semifinal. A tour-wide partnership plus a primetime placement on an unsponsored star is a very good fortnight.
It is running 60th Anniversary Edition colourways in white, black and gold across the line, with Andrey Rublev in the K-Frame Speed Rublo, per The Second Serve’s US Open shoe report.
So a brand most sneaker readers file under nostalgic mall staple is, this month, the official footwear of men’s professional tennis — and its most valuable on-court moment came free.
The heritage-brand comeback is one of the defining patterns of the decade. We have covered it with the ASICS GEL-1130 and again when adidas turned a terrace shoe into a loafer. K-Swiss has quietly been running the same play, just on a tennis court where fewer sneaker people were watching.
The Match Mattered Beyond Footwear
Worth stating plainly, because footwear coverage can make a historic occasion sound like a product launch.
This was the first US Open semifinal in the Open era between two Black American men. Tiafoe, the son of immigrants from Sierra Leone; Shelton, coached for years by his father Bryan, a former professional.
It also arrives in the middle of a genuine resurgence. Sportico notes that there are currently 14 American men in the top 100 — more than any other country, with France and Argentina tied on 10. A decade ago there were seven. Ten Americans reached the fourth round at this US Open, the most at any major since 2002.
No American man has won a Grand Slam since Andy Roddick took the 2003 US Open. Whatever the shoes on their feet, one of these two was guaranteed a shot at ending a twenty-three-year drought.
The Rest of the US Open Shoe Story
A few other things worth knowing from the tournament:
Serena Williams played her mixed doubles matches in the Nike Vapor X — a 2017 shoe she has worn throughout her comeback year. A nine-year-old silhouette on court at a major is its own small heritage story.
adidas ran a “distilled pink” colourway across the Barricade, Defiant Speed, Avacourt and Adizero Ubersonic, tied to a New York Collection in maroon and white. The brand says it drew on the bold spirit of 1990s New York — nightlife and fashion rather than sport.
Andrey Rublev wore the K-Frame Speed Rublo in K-Swiss’ anniversary treatment.
Pink was, unmistakably, the colour of this US Open. If you want to know what lands next, our September release calendar has the month mapped out.
Buying Tennis Shoes in India
Now the practical part, and there is a straightforward answer.
K-Swiss is difficult to buy here. The brand runs official US and EU storefronts, but no meaningful Indian retail presence surfaced at the time of writing. The Ultrashot 4 lists around $170 in the US, frequently discounted to roughly $110 at specialist tennis retailers.
Importing it is a bad idea. Footwear entering India carries roughly 42% in duties, as we set out in the import duty breakdown. A $110 shoe becomes considerably more than that landed, and you lose any ability to try it on — which, for a court shoe where fit prevents injury, is the wrong trade entirely.
What to buy instead. adidas and ASICS both have proper Indian tennis distribution and both make tour-grade hard-court shoes. The adidas Barricade is the closest direct equivalent to the Ultrashot in construction philosophy — heavy-duty, stable, built for lateral abuse. ASICS’ court range is widely available through Indian retail and sports specialists. Nike’s tennis line is stocked patchily but does appear.
What actually matters when choosing. Hard courts in India are abrasive and hot. Prioritise outsole durability warranties, toe-drag protection if you slide, and lateral stability over cushioning softness. A tennis shoe that feels plush in a showroom is often the one that rolls your ankle in month three.
Care note. Court shoes accumulate grit that grinds through uppers from the inside. Brush them out after play rather than at the end of the season — our sneaker care archive has the method. For broader context on Indian footwear pricing, India’s biggest sneaker brand sells shoes for ₹683.
The Verdict
Every brand in tennis spends heavily to get a shoe on court at a Grand Slam. Contracts, bonuses, custom colourways, retainers, appearance clauses.
On Friday night, K-Swiss got the most visible footwear placement of the entire tournament — primetime, Arthur Ashe, a historic match, a bright pink shoe impossible to miss, with its own nickname branding on the side — and paid nothing for it.
Meanwhile the brand that is paying Frances Tiafoe covered him from headband to sock and could not cover his feet.
That gap is the whole lesson. Apparel is a design and distribution business. Footwear is an engineering one. You can build the first from a good idea and a factory partner; the second takes years, tooling, testing and a tolerance for athletes who will not wear your product until it actually works.
Sixty years in, K-Swiss can still make a shoe a top-20 professional trusts without being paid to wear it.
That is worth more than the contract it does not have.
Key Takeaways
- Frances Tiafoe played the 2026 US Open semifinal in K-Swiss Ultrashot 4 player editions with “Big Foe” branding, in pink matched to his kit.
- He has no formal deal with K-Swiss; his apparel sponsor is Lululemon, signed in January 2025.
- Lululemon’s footwear programme has no tour-grade tennis shoe, and tennis apparel and footwear deals are negotiated separately.
- K-Swiss gained a primetime Grand Slam placement at no cost, in its 60th anniversary year and the week after becoming the ATP Tour’s official shoe partner.
- Ben Shelton wore On’s Lights Out collection under a single head-to-toe contract.
- The match was the first Open-era US Open semifinal between two Black American men, amid 14 American men in the top 100 — double the figure from a decade ago.
- K-Swiss has no meaningful Indian retail presence; adidas and ASICS are the practical tour-grade alternatives here.
