NBA Primary LogoNBA Alternate LogoNBA Wordmark LogoNBA Team History Who is the greatest center in the NBA of All-time? Robert Parish Walt Bellamy Dwight Howard Elvin Hayes Patrick Ewing Wilt Chamberlain George Mikan Kareem Abdul-Jabbar Willis Reed Bill Walton Moses Malone Nate Thurmond Hakeem Olajuwon David Robinson Bob McAdoo Wes Unseld Shaquille O’Neal Bill Russell Dikembe Mutombo Dave Cowens Poll …