Watch Alistair Overeem knock out Walt Harris ahead of UFC Vegas 9
Watch Alistair Overeem knock out Walt Harris ahead of UFC Vegas 9 [embedded content] Alistair Overeem began his UFC tenure by retiring Brock Lesnar. As he looks to possibly make another run at the UFC heavyweight championship, he’ll next face Augusto Sakai in the UFC Vegas 9 main event on Saturday, Sept. 5, in Las…