James Marsden: Los Angeles Triathlon Believer

James Marsden participates in the Kaiser Permanente 2010 Los Angeles Triathlon on Sunday (October 3) in Venice Beach, Calif.

The 37-year-old actor had the word “believe” written on his right arm and showed his love for the New York Yankees!

James is no stranger to competing in triathlons. Last month, he participated in the Nautica Malibu Triathlon alongside Trevor Donovan, Teri Hatcher, and Modern Family‘s Julie Bowen.

Also pictured inside: Stephen Moyer and his daughter Lilac, who were at the event to show their support for the participants.