http://www.MMAWeekly.com/ -- Frankie Edgar has gotten the best of BJ Penn in each of the three times they've fought, but don't think that Edgar doesn't hold any gratitude to Penn. After Edgar defeated Penn for the third time, the Hawaiian determined he'd run his course in the sport and retired. Edgar had nothing but respectful comments for the former two-division champion, going as far as to say that the victory was bittersweet and he felt indebted to Penn.