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