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Heisman Trophy winner Matt Leinart (search) will be back for his senior season at Southern California and try to lead the Trojans to an unprecedented third straight national championship.

The USC quarterback announced his decision Friday, opting to complete his eligibility rather than enter the NFL draft (search), where he figured to be one of the top selections and become an instant millionaire.

"I realized the opportunity right now to support my family by going to the NFL early, but to me I think college football and this whole atmosphere here and being with my fans and my teammates ... is ultimately more satisfying and will make me happier than any amount of money could make someone happy," he said.

There was a roar of approval from a crowd of about 500 students and fans jammed into the foyer at Heritage Hall to hear Leinart's decision.

"OK, so I'm smiling," a beaming coach Pete Carroll (search) said after Leinart's announcement.

Leinart has made clear for months his desire to stay in school. He said last August he would definitely return because he loved playing for the Trojans, he needed to get stronger physically and make other improvements.

More recently, he said he was leaning toward returning, but would investigate his options.

In the end, Leinart decided the risk of serious injury or a sub-par performance next season was less important than following his heart and enjoying college for another year.

Leinart consulted coaches, friends, teammates, NFL quarterbacks Carson Palmer and Ben Roethlisberger and his parents. The 21-year-old said he didn't come to a final decision until Friday.

A 6-foot-5, 225-pound left-hander, Leinart was a third-year sophomore who hadn't thrown a pass for the Trojans when he succeeded Palmer, another Heisman Trophy winner, as USC's starting quarterback 16 1/2 months ago.

The Trojans have a 25-1 record with Leinart at the controls — including 13-0 this season. He capped the year by passing for 332 yards and an Orange Bowl (news - web sites)-record five touchdowns in USC's resounding 55-19 victory over Oklahoma on Jan. 4.

Leinart's 6,878 career passing yards rank fourth on the school's career list, and his 71 TD passes rank second — one behind Palmer.

All that in just 26 games.

Two other USC (search) juniors, linebacker Lofa Tatupu and punter Tom Malone, also announced decisions on their futures. Tatupu said he is making himself eligible for the NFL draft, while Malone said he will return to USC.

By staying in school, Leinart could become the second player to win the Heisman twice. Ohio State running back Archie Griffin accomplished the feat in 1974-75.

He also becomes the second straight Heisman winner to play another year of college football. Oklahoma's Jason White won college football's most prestigious award in 2003, then finished third in the 2004 balloting.

What Leinart gives up by staying in school is a heap of money.

"I get $950 a month," Leinart said, referring to his stipend. "Come on, $950 a month, we've got a training table, we've got food. The money is not important to me. I realize the opportunities. ... My teammates and being here is more important to me right now."

USC's only loss in the last two seasons was a 34-31 triple overtime setback at California on Sept. 27, 2003, in Leinart's fourth game as the Trojans' quarterback.

He overcame a shaky start to go 21-of-39 for 277 yards, but was intercepted three times. He has thrown only 12 other interceptions at USC.

Leinart passed for 3,556 yards and 38 touchdowns with nine interceptions in his first season as the starter, no doubt helped by the presence of talented and experienced wide receivers Mike Williams and Keary Colbert.

As a fourth-year junior this season, throwing to a corps of young, inexperienced wideouts, Leinart passed for 3,322 yards and 33 TDs with six interceptions.

Leinart's return means John David Booty, a former Louisiana prep standout who will be a third-year sophomore next season, is slated to be No. 2 on the depth chart.

Booty is considered a better prospect now than Leinart was when he took over.

The Trojans will have two other highly regarded quarterbacks on the roster next fall in Rocky Hinds, a freshman who redshirted this season, and Mark Sanchez, who will be a freshman. Sanchez, a senior at Mission Viejo, Calif., High who has committed to USC, is considered one of the best prep quarterbacks in the country.

Even without Leinart, USC figured to enter next season as the one of the country's highest-ranked teams, if not No. 1, since the majority of its starters this season were underclassmen. With Leinart, it's a virtual certainty the Trojans will be No. 1.

USC will bring a 22-game winning streak into next season — longest in the country.

What more could a guy from Santa Ana, Calif., ask for?

"This is the greatest time of my life, being in L.A. I'm close to home. My family, my friends, everyone's here," Leinart said. "I think that alone is enough motivation for me to come back."