MMA Correspondent Brian Oswald breaks down each fight from UFC 137.

The most anticipated fight of the weekend had to be Penn vs. Diaz. With his retirement on the line, Penn looked to show his experience versus a younger fighter Diaz. Penn may have be on the way out of UFC, but he will always be known one of the great fighters the sport has produced.

We get some insight from Josh Koscheck on what fans should know about fighters, his fighting technique and even his favorite athlete.

We all saw Sonnen call out Silva at 135. BR's MMA contributor Andrew Brining give us five reasons Silva should take the fight.