It was the type of bag you could spot within the overhead bin of an airplane’s first-class cabin. Besides it was being carried onto Centre Court docket at Wimbledon by a 6-foot-2-inch redhead.

Jannik Sinner, 21, the Italian tennis participant ranked eighth on the earth, broke from custom Monday when he emerged on courtroom with a custom-made duffel bag wrapped in Gucci’s “GG” monogram, its purple and inexperienced straps slung over a shoulder.

To the common sports activities fan, this may occasionally not appear so extraordinary. In basketball, tunnel walks have grow to be mini style reveals as gamers make their strategy to their locker rooms drenched in designer clothes and accessories.

However that type of sartorial vitality has not but come to tennis — particularly to not Wimbledon, probably the most conventional of the 4 Grand Slam tournaments, with its strict all-white uniform necessities. (That is the primary yr that ladies taking part in at Wimbledon are allowed to put on nonwhite underwear, to ease anxiousness round durations.)

Gamers at Grand Slams abide by a rule e-book that regulates what they will put on and carry onto courts. There are limits on the dimensions, placement and variety of logos on their sleeves, collars, headbands, socks and, sure, gear luggage.

Many gamers carry each a racket bag and a private duffel bag onto courtroom, however usually they’re apparent athletic luggage. Just a few hours earlier than Mr. Sinner’s match started, for instance, Novak Djokovic (ranked second on the earth) walked onto Centre Court docket with two white luggage made by Head, his racket sponsor.

Mr. Sinner’s look along with his duffel was the primary time, Gucci stated, {that a} tennis participant has been cleared to hold a luxurious logo-ed bag on courtroom. Even gamers beloved by the style world, like Roger Federer and Serena Williams, who had an in depth relationship with Gucci, had not carried out so earlier than their retirements. For Ms. Williams’s closing match final yr, she carried a Wilson racket bag and duffel stamped along with her personal Nike monogram emblem.

Mr. Sinner, whose initials additionally seem on his Gucci bag, was named an envoy for the model final July. Gucci stated it labored with Mr. Sinner’s crew for approvals from the Worldwide Tennis Federation, the Affiliation of Tennis Professionals and the Grand Slams, together with Wimbledon, to make sure that the bag met the required necessities. He carried his rackets in a normal white Head bag.

Gucci isn’t the one luxurious home seeking to align itself with younger tennis stars. Naomi Osaka and Carlos Alcaraz have been ambassadors for Louis Vuitton. Mr. Alcaraz, 20, who’s ranked No. 1 on the earth, was introduced as a Vuitton ambassador on June 28, simply 5 days earlier than Wimbledon started. The identical day, Gucci held a swanky non-public dinner for Mr. Sinner in London to have fun his third yr at Wimbledon.

Mr. Sinner and Mr. Alcaraz are budding rivals among the many subsequent era of males’s tennis stars. Eventually yr’s U.S. Open, they performed a quarterfinals match that lasted greater than 5 hours, ending earlier than 3 a.m. — the newest a U.S. Open match had ever completed.

In contrast to Mr. Alcaraz, Mr. Sinner doesn’t have a Grand Slam title, though tennis prognosticators are hopeful. The Italian does have one factor the Spaniard doesn’t: a fervent group of followers, referred to as the Carota Boys, who gown in carrot costumes and journey to tournaments to assist him.

Mr. Sinner doesn’t seem to view the bag, which was made in a canvas materials with a leather-based trim, as a critical break from custom. In an e mail, he wrote that he was very keen on traditions, together with Wimbledon’s gown code. For the bag’s design, he and Gucci needed “something that could have been drawn from Gucci’s archives.”

The straps are detachable and the within accommodates hidden water bottle pockets. He stated he’ll use it to hold a change of garments, dietary dietary supplements, sunscreen and anything he might have for a number of hours on courtroom.

Requested if he made any particular requests to Gucci, Mr. Sinner wrote: “I wanted the bag to be comfortable to carry and have enough to keep all my stuff inside. My priority was functionality, I guess.”