Started at 30, now they're here: Inside the strenu...

The cast of the NBA's grandest stage is always easy to identify. This year, there's Victor Wembanyama and Jalen Brunson. The Spurs' Coyote and Spike Lee. The ex-Knicks and Spurs in the crowd. Head coaches Mike Brown and Mitch Johnson. And of course, New York's celebrity fans courtside. But, the most avoidable yet arguably important supporting character of each NBA Finals? The 29.5-inch official Wilson-branded 100% genuine leather cover basketball. Karl-Anthony Towns will grab it from the air. Stephon Castle could punch it through the basket. Josh Hart surely will dive in the stands to secure it. De'Aaron Fox can dash up the floor while dribbling it. As New York and San Antonio face off in the 2026 NBA Finals (Game 2 on Friday) the basketballs in action have all had a winding trip to Frost Bank Center and Madison Square Garden. They've actually been thudding off the hardwood for months across the NBA.Editor's PicksRanking Knicks and Spurs players from 1 to 30: Which roster has the most talent?Ben GolliverAir Corgi's prediction in the 2026 NBA Finals? A close Spurs winKalan HooksHolmes: A game ball's road to the NBA FinalsBaxter Holmes2 Related It's how the league makes sure the game's biggest stage has the right bounces. Every January, the NBA sends four Finals-branded basketballs to all 30 teams. The mission is simple: Break them in before the league collects and redistributes them for the NBA Finals. "Obviously, this is the most pivotal series of games we have. And so, you want them to have, I keep using game-ready, but game-ready basketballs which is different than out-of-the-box basketballs," Christopher Arena, the NBA's head of on-court and brand partnerships, told ESPN. Similar to Spalding, Wilson uses leather supplied by Chicago's Horween Leather Company. But one key difference emerged when Wilson became the NBA's official ball provider in the 2021-22 season. Under Spalding, used game balls were sent back to be laser-engraved with the NBA Finals script. Wilson's Finals basketballs are pre-produced and distributed to teams months in advance to be broken in. Wilson has a protocol at their Ada, Ohio, facility that Arena said the league calls "waking the windings of the ball." Wilson pre-balances them on a machine that dribbles rapidly, while another sends them against a wooden panel. But there's nothing to substitute sweat, oils and dirt that can come from a player, court and environment.The basketball in Jalen Brunson's hands has already traveled thousands of miles. It was one of dozens of Finals-branded basketballs distributed across the NBA. Gregory Shamus/Getty ImagesWhat makes leather unique is that it's an organic material derived from a living thing (in the NBA's case, the leather comes from cowhides). Therefore, there's a natural aging process, referred to in the fashion industry as "patina" -- a fancy way of saying it gets stained. "Those elements sort of break the ball in. It gives it its darker color. It gives it a little bit more tack over time," Arena said. "And so, it takes, depending on who you ask and how much play, like three to four weeks to get that right." Any equipment manager around the league will explain that the veterans won't play with the new balls, Arena added. The job falls to rookies, G-League players or ball attendants. The Knicks' and Spurs' equipment managers were not made available for this story. Unlike composite basketballs that are "made of synthetically produced material that feels like leather," the NBA's official game ball uses genuine leather. Leather doesn't always have to be broken in either, Keanan Duffty, a professor at the University of Southern California, told ESPN. Duffty, a member of the Council of Fashion Designers of America, explained the process of breaking in a basketball, which is "very much a utility. It's very practical. "Leather reacts to humidity. ... It can stretch. Depending on the heat in its environment, it can change the way it behaves. So I would think that basketball players don't want to be surprised by that on the court," Duffty said. "They want it to go through this process of being utilized so they know how it's going to behave when they're actually on the court for a game." Every time a ball bounces, it stretches, going through an aging process. Leather naturally softens, but the pressure it endures while hitting the court can cause it to soften, too. Moisture impacts that process in a unique way. The friction that a ball goes through when feeling the court or rim would change according to the moisture in the skin of the ball, Duffty explained. The moisture too increases over time of a game with more people touching the ball, resulting in a different behavior. All of these factors lead to a preferred game experience for the players, especially important on the heightened stage of the NBA Finals. "If you take the new balls out of the box ... and you shoot for an hour, the tips of your fingers will be bloody, just b

Started at 30, now they're here: Inside the strenu...

Key takeaways

More in sports