Other fighters, such as Tra Telligman and Pete Williams, earned the respect of the MMA world by defeating giants of the sport in upset fashion. Telligman defeated one of Pride's best fighters, Igor Vovchanchyn, at Pride 13 - Collision Course in a stunning upset. After this victory, Tra was ranked as the #10 Heavyweight fighter in the world in MMA. Williams knocked out former UFC Heavyweight Champion Mark Coleman with a high kick to the head in overtime at UFC 17, and eventually earned a UFC Heavyweight Championship title shot. Pete Williams was also ranked as high as the #6 Heavyweight fighter in the world as of May 2000. The Lion's Den was also successful in the Pancrase organization. Ken Shamrock and Guy Mezger became King of Pancrase multiple times, and Frank Shamrock won the interim King of Pancrase title.