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