​The San Antonio Spurs have never really had a shortage of talent. From George Gervin to David Robinson, then Tim Duncan, and now Victor Wembanyama, a transcendent player has almost always been in San Antonio.As a result, notable free agents often find their way to Texas. However, a lot of them are well past their primes, looking to win a ring before they retire. Five players stand out as guys who joined the Spurs too late. Had they come in their prime, they might have gone down as all-time greats who were decorated winners.Honorable mentions go to Antonio McDyess, David West, and David Lee, who all joined the Spurs too late. However, as power forwards, they would have been redundant anyway, as their primes overlapped with Duncan’s. Andre Miller, too, would have been an elite addition. His prime was just before Tony Parker’s, although throwing the Frenchman into the fire early worked out.READ MORE: Josh Giddey Could Steal Victor Wembanyama’s Claim to FameREAD MORE: Stephon Castle to Usurp De’Aaron Fox as Spurs’ Second All-StarREAD MORE: Keldon Johnson Could Cement Himself as Spurs’ Fan Favorite5. Rudy GayRudy Gay spent three seasons with the Spurs immediately after Kawhi Leonard was traded to the Toronto Raptors. When he arrived, he was already 32 years old. Along with DeMar DeRozan and LaMarcus Aldridge, the Spurs remained afloat before totally embracing a rebuild.During his prime, from 2007 to 2015, he was one of the best players to not make an All-Star Game. He averaged 19.6 points and six rebounds for the Memphis Grizzlies, Sacramento Kings, and Raptors in that span.Thanks to his offensive prowess, he would have been an upgrade over a young and raw Kawhi Leonard in 2013, maybe allowing the Spurs to win an additional ring. He would have been an upgrade over a past-his-prime Michael Finley, as well. In 2009, the Spurs were upset in the first round by the Dallas Mavericks. It was the only season when Matt Bonner was a full-time starter. The Red Rocket was a better shooter, sure, although Gay was a well-rounded player. Instead, the Spurs got him at the tail end of his career.4. Kevin MartinKevin Martin, like Gay, was never an All-Star. Most fans probably don’t remember his stint in San Antonio, as he only played 16 games with the Spurs to end his career. He averaged 6.2 points in 2016.At the time, the Spurs were getting ready to pass the torch from Duncan to Leonard. Martin’s best years were with the Kings and Houston Rockets in the late 2000s, where he was a solid shooter and a good scorer. While he was lighting it up, the Spurs were taking turns starting Finley, Roger Mason, and Brent Barry. Even Manu Ginobili saw the starting lineup at that point. Instead of that cast of characters, imagine Martin, Duncan, Parker, Bruce Bowen, and Bonner (or Gay) all starting.Shooting, defense, and playmaking would have been abundant. The Spurs won titles in 2005, 2007, and 2014. With Martin sharing the backcourt with Parker, maybe they could have repeated