Following 16 years of competition and titles with organizations such as the UFC, Pancrase, WEC and Strikeforce, Frank Shamrock has announced his retirement from mixed martial arts.
The 37-year-old MMA trailblazer announced his retirement during tonight’s “Strikeforce and M-1 Global: Fedor vs. Werdum” event at the HP Pavilion in San Jose, Calif.
Shamrock’s announcement was carried as part of the night’s Showtime broadcast, on which he served as a color analyst.