Source: Booty to be in reserve role against Notre Dame

Third-year sophomore Mark Sanchez will be
USC's starting quarterback when the
Trojans (No. 14 BCS, No. 13 AP) play Notre Dame on Saturday, a source familiar with the decision said Friday.

Regular starter John David Booty, who is nursing a broken finger on his throwing hand, will come off the bench, the source told ESPN's Joe Schad.

Booty sat out USC's 20-13 victory over Arizona last weekend.

Sanchez filled in and completed 19-of-31 passes for 130 yards and
one touchdown with two interceptions in his first career start.

Sanchez and Booty shared time during 11-on-11 drills in
practice this week, although Booty simply handed the ball off when it was his

Booty broke his finger Oct. 6 in the second quarter of USC's
shocking 24-23 loss to Stanford, but played the whole game and
threw four interceptions in the second half. He hasn't taken a snap
from center since, but has said he doesn't see that as a problem.

Notre Dame (1-6) has a 42-31-5 record in a rivalry that began in
1926, but USC (5-1) has won the last five games between the teams
by an average of 23.2 points.

Information from The Associated Press was used in this report.