This week's WWE Monday Night Raw was exciting right out of the gate.

Raw and Smackdown general manager John Laurinaitis introduced Brock Lesnar to start the night. Lesnar returned last week after leaving the WWE in 2004 to pursue other opportunities, including the NFL and UFC.

Lesnar ended last week's episode by giving John Cena an F5, his finishing move.

Lesnar entered the ring, explaining that he would bring legitimacy back to the WWE. Laurinaitis announced that the two would face each other at Extreme Rules, the next WWE pay-per view, which airs on April 29.

Cena interrupted Lesnar's speech, confronting him in the middle of the ring. Cena slapped Lesnar, provoking him to attack Cena. The two had to be separated multiple times, as almost WWE superstar came out  to keep the two apart. The altercation left Cena bloodied.

The fight set the tone for the rest of the night. Here's a recap of what happened on this week's Raw:

Matches

Brodus Clay/Santino OVER Jack Swagger/Dolph Ziggler

R-Truth OVER Cody Rhodes

Lord Tensai OVER Yoshi Tatsu (ref stopped match)

Mark Henry OVER CM Punk (disqualification, CM Punk keeps WWE Title)

Alberto Del Rio OVER Zack Ryder (tap out)

John Cena OVER David Otunga (tap out)

Highlights

John Cena tells John Lauriniaitis he wants a match before the night is over

Big show interrupts Cody Rhodes' match, distracting him for a second straight week

CM Punk disputes Chris Jericho's claims that he has become an alcoholic

Chris Jericho pours beer over CM Punk after he's taken down by Mark Henry, following Punk's DQ

Actors from The Three Stooges appear to promote their new movie, Kane choke slams Curly

Brock Lesnar delivers a low blow to John Cena after pinning David Otunga