Photos: UFC 118

B.J. Penn is sent reeling by a right hand from Frankie Edgar during their UFC 118 lightweight title fight at TD Garden in Boston.   (Josh Hedges / Zuffa LLC via Getty Images)

Frankie Edgar and B.J. Penn trade blows during their UFC lightweight title fight on Saturday night at TD Garden.   (Al Bello / Zuffa LLC via Getty Images)

Frankie Edgar tries to evade a right hand from B.J. Penn during their UFC lightweight title bout on Saturday night at UFC 118.   (Josh Hedges / Zuffa LLC via Getty Images)

B.J. Penn catches Frankie Edgar with a left on Saturday night during their lightweight title bout at UFC 118.   (Al Bello / Zuffa LLC via Getty Images)

Frankie Edgar looks to land a left hook against B.J. Penn during their lightweight title fight on Saturday night at TD Garden.  (Josh Hedges / Zuffa LLC via Getty Images)

The newest Boston Celtic, Shaquille O’Neal, sits ringside during the UFC 118 bouts on Saturday night at TD Garden.  (Al Bello/Zuffa LLC via Getty Images)

Randy Couture reacts after forcing James Toney to submit in the first round of their heavyweight fight on Saturday night at UFC 118.   (Josh Hedges / Zuffa LLC via Getty Images)

The referee signals the end of the fight after Randy Couture forced James Toney to tap out at the 3:49 mark of the first round during their UFC 118 heavyweight bout on Saturday night.   (Al Bello / Zuffa LLC via Getty Images)

Randy Couture goes to work on James Toney after taking him down early in the first round of their UFC 118 heavyweight bout on Saturday night.  (Al Bello / Zuffa LLC via Getty Images)

Gray Maynard gets the upper hand against Kenny Florian in their lightweight bout on Saturday night at UFC 118 in Boston.   (Josh Hedges / Zuffa LLC via Getty Images)

A bloodied and battered Marcus Davis is stunned by a right hook from Nate Diaz during their welterweight fight at TD Garden during UFC 118 on Saturday night.  (Josh Hedges / Zuffa LLC via Getty Images)