Las Vegas, Nevada—The MGM Grand Garden Arena is teeming with boxing enthusiasts clamoring for a taste of what may be the ultimate fight between Manny "Pac-Man" Pacquiao (53 wins [38 by KO], 3 losses, 2 draw) and Juan "Dinamita" Manuel Marquez (53 wins [39 by KO], 5 losses, 1 draw).

The two sluggers first clashed fists back in May 2004 at the MGM Grand with the decision ending with a draw despite Manny flooring the Mexican three times in the first round alone.

Their rematch at the Mandalay Bay, Las Vegas, four years later, ended as a split decision in favor of the Pambansang Kamao.

This fight history with Pacquiao still aggravates Marquez and it clearly shows with the T-shirts he wore ("I beat Manny twice") whenever he makes public appearances.

Pacquiao's WBO Welterweight title is on the line today but this fight with Marquez will mean more than just defending his belt—it would mean closing the 7-year-old argument about who is the better fighter and finally removing all doubts in the minds of boxing fans and Marquez himself.  

LET'S GET IT ON. Marquez was the first one to emerge from the dugout wearing a white sombrero and black trunks.

Pacquiao followed a little later wearing white and blue trunks.

Referee Tony Weeks will officiate the fight.

Now it's time to fight!

Rounds 1 to 6. Pacquiao starts the offensive with jabs while Marquez defends.

Pacquiao continues his jab barrage and Marquez can only defend himself.

A left from Marquez lands but Pacquiao shrugs it off.

Pacquiao dances and lands a left to Marquez followed by a combination of punches to the Mexican's body.

This time, both fighters are defending but Pacquiao suddenly explodes with a good and successful combination punch to Marquez.

Both are dancing around at this time so Pacquiao moves in with his offense and gives a good left straight to Marquez.