Who's the greatest center of all time, Wilt Chamberlain or Kareem Abdul-Jabbar? Where does Shaquille O'Neal land in the rankings? Would you pick Tim Duncan or Charles Barkley as the better power forward? Who's your best Sixth Man? Where does LeBron James rank among small forwards? Sports Illustrated has polled its basketball experts, including Jack McCallum, Chris Ballard, Alexander Wolff, Lee Jenkins, Ian Thomsen, Chris Mannix, and Mark Bechtel, to determine the Top 10 in more than 20 categories. The rankings appear alongside stunning photography and classic stories from SI's archives. This is the best of the best in the NBA, or, more simply, Basketball's Greatest.