NFL: San Francisco 20, Dallas 13

ARLINGTON, Texas, Aug. 30 (UPI) -- Kory Sheets scored on a 9-yard run with 33 seconds left Saturday, lifting San Francisco to a 20-13 NFL pre-season win over Dallas.

The 49ers have won all three of their pre-season contests.

The touchdown came shortly after a 24-yard field goal by Alex Romero had created a 13-13 tie with 3:55 remaining.

Sheets scored twice and had 42 yards on 11 carries.

Rookie San Francisco quarterback Nate Davis completed 10-of-15 passes for 132 yards.

No. 1 quarterback Shaun Hill went 9-of-17 for 79 yards, and Arnaz Battle caught four passes for 54 yards.

Jon Kitna went 10-of-19 for 127 yards for Dallas.

Tony Romo was 11-of-17 for 125 yards and one interception.

Tashard Choice gained 55 yards on eight carries, while Felix Jones rushed for one touchdown for the Cowboys (1-2).