When you think showboaters, Frank Shamrock wouldn't be a person that would come to mind. The former UFC and Strkeforce champion had a storied career, as he fought from 1994-2009 and is now a commentator on Showtime.
For you MMA hardcores, you will remember Shamrock's legendary feud with Bas Rutten in the Pancrase promotion with Rutten winning two of the three fights. But the third fight is what people remember the most due to Shamrock making faces and mocking Rutten as they were battling for leglocks. Shamrock was trying to get Rutten to punch him, but punches in Pancrase were illegal.
After repeatedly getting mocked, Rutten finally couldn't take it anymore and punched Shamrock in the head and received a red card. Shamrock might have won the mental battle, but Rutten won the war.
For the new fans out there, you have a better chance of remembering the feud Shamrock had with Phil Baroni. Shamrock and Baroni got into heated words after Shamrock defeated Cesar Gracie at a Strikeforce event in 2006.
The two then had choice words for each other with a YouTube video war, which culminated in their fight for the inaugural Strikeforce middleweight championship in June of 2007.
Shamrock won the fight in the second round via submission due to rear naked choke. Shamrock was criticized for pushing an unconscious Phil Baroni off him using his leg rather than allowing the referee to pull Phil off Frank. In a post-fight interview question regarding the incident, Shamrock stated that "[Phil] was heavy on top of me...he was squishing the life out of me...he was laying on my leg and on my chest...that's it. And I thought it looked better on camera."