UFC Fight Night 103 takes place Sunday in Phoenix, Arizona. In a highly unusual moment, the biggest underdog in the event is a main event fighter. UFC Hall of Famer BJ Penn is currently +325.

However, at the weigh-ins he fired up the fans with an epic statement.

“They say this is old school vs. new school,” said Penn. “Kicking ass is timeless.”

Bettors, however, are feeling time waits for no man.

Yair Rodriguez -280
BJ Penn +325

Joe Lauzon -140
Marcin Held +110

Ben Saunders -115
Court McGee -115

Sergio Pettis -150
John Moraga +120

Frankie Saenz -155
Augusto Mendes +125

Alexy Oleinik -145
Viktor Pesta +115

Tony Martin -270
Alex White +210

Devin Powell +180
Drakkar Klose -230

Nina Ansaroff -140
Jocelyn Jones-Lybarger +110

Walt Harris -150
Chase Sherman +120

Joachim Christensen -225
Bojan Mihajlovic +175

Dmitrii Smoliakov -110
Cyril Asker -120

How Fight Odds Work

Unlike a spread on a football game where one team is getting a certain amount of points (ex. Saints +7), in MMA fights the line on the game is called a money line.
Yair Rodriguez -280
BJ Penn +325

In this fight, Rodriguez would be the favorite, meaning if you bet $280 on him and he wins, you would profit $100. If he were to lose though, you would lose the full $280.

If you were to bet on Penn at +325, if you bet $100 on him and he wins the fight, you will profit $325. If Penn were to lose the fight, you would lose your original $100 bet.

Depending on how people are betting on the fights the odds will shift from the moment they open, right up until the night of the fights.

The sport is built on moments that make you involuntary think “HOLY F***ING S***!!!” Those can come at any time, on any portion of the card, from any fighter. Thus, some bettors look to the underdogs, sometimes big ones, as the best bets.