Leinart can only watch and stay ready as backup

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TEMPE, Ariz. (AP) -- The Arizona Cardinals insist Matt Leinart is the team's quarterback of the future.

No one knows when that future might be. For now, he's just a backup, preparing to watch the Super Bowl and be ready should anything happen to Kurt Warner.

Leinart has not made any waves about his situation, even in the immediate aftermath of coach Ken Whisenhunt's decision just before the season to make Warner the starter.

Leinart was 37-2 as a starter at USC, winning the Heisman Trophy and leading the Trojans to the national championship in 2004. Although he might have been the No. 1 pick in the draft that year, he chose to return to school for his senior season. USC advanced to the national title game, but lost to Texas.

Former coach Dennis Green made the left-handed rookie the starter five games into the 2006 season. In 12 games, 11 as a starter, Leinart completed 58 percent of his passes for 2,547 yards and 11 touchdowns, but was intercepted 12 times.