Steve Nash
Credit: Lisa Blumenfeld / Getty Images

"He's an interesting study, because he's built more like a soccer player than . . . a basketball player," Williams says. "He is not going to subject his knees and ankles to the same amount of stress as, say, a center or a forward, a bigger person." But the 39-year-old point guard – the oldest active NBA player – struggled with leg, hip, and groin injuries last season and has an ankle injury this year. With age, Williams says, athletes need more recovery time. "It does get more problematic."