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