Pacquiao KOs Hatton

Manny Pacquiao sends Ricky Hatton to the canvas in the first round Saturday night during their junior-welterweight title fight in Las Vegas.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao was at a reach disadvantage but used his quickness in the second round to continually land punches against Ricky Hatton on Saturday night in their junior-welterweight bout.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao has Ricky Hatton on the defensive during a barrage of punches in the second round Saturday night.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao works inside against Ricky Hatton in the second round of their junior-welterweight title bout Saturday night.  (Wally Skalij / Los Angeles Times)

Ricky Hatton grabs ahold of Manny Pacquiao in an attempt to stop the onslaught in the second round of their junior-welterweight title fight Saturday night.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao connects with a left hook that finished off Ricky Hatton late in the second round of their junior-welterweight championship fight on Saturday night at the MGM Grand Garden Arena in Las Vegas.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao walks away from a fallen Ricky Hatton at the end of the second round of their junior-welterweight title fight on Saturday night.  (Wally Skalij / Los Angeles Times)

Referee Kenny Bayless calls the fight at the end of the second round with Ricky Hatton on his back and Manny Pacquiao waiting across the ring.  (Wally Skalij / Los Angeles Times)

Trainer Freddie Roach reacts after Manny Pacquiao knocked out Ricky Hatton in the second round of their junior-welterweight title fight Saturday night in Las Vegas.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao prays in his corner after knocking out Ricky Hatton in the second round of their junior-welterweight title fight Saturday night.  (Wally Skalij / Los Angeles Times)

Manny Pacquiao, who won his sixth world title, celebrates his victory over Ricky Hatton on Saturday night in Las Vegas.  (Wally Skalij / Los Angeles Times)

A doctor checks on Ricky Hatton, who remained on the canvas for about 15 minutes after Manny Pacquiao knocked him out at the end of the second round Saturday night during their junior-welterweight title fight in Las Vegas.  (Wally Skalij / Los Angeles Times)