On Tuesday, Tim Kennedy announced his retirement from MMA with a lengthy Facebook post. Kennedy first entered the Fight Matrix rankings in 2003 as the #42 middleweight. The following chart shows his Quarterly Generated Historical Ranking for his career.

Significant dates:
Defeated Michael Bisping on April 16, 2014
Defeated Robbie Lawler on July 30, 2011
Strikeforce debut on June 19, 2009
IFL debut on Feb. 23, 2007