Wilt Chamberlain is considered one of the best shot-blockers in basketball .
Some of the best shot-blockers in the NBA have been Bill Russell , Wilt Chamberlain , Kareem Abdul-Jabbar , Bill Walton , Wilt Chamberlain , Mark Eaton , Manute Bol , Hakeem Olajuwon , Tree Rollins , Patrick Ewing , Shaquille O'Neal , David Robinson , Dikembe Mutombo , Shawn Bradley , Alonzo Mourning , Ben Wallace , Theo Ratliff , Andrei Kirilenko , Marcus Camby , Tim Duncan , Dwight Howard , Emeka Okafor , and Josh Smith .
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