MLB: Colorado 5, Philadelphia 4

PHILADELPHIA, Oct. 8 (UPI) -- Yorvit Torrealba's two-run homer Thursday keyed Colorado's 5-4 win over Philadelphia that forged a 1-1 tie in the best-of-five National League Division Series.

The homer, one of Torrealba's two hits, put Colorado up 3-0 with two outs in the top of the fourth.

Dexter Fowler hit two sacrifice flies.

Todd Helton added one RBI, while Carlos Gonzalez had three of the nine hits for the Rockies, who go home to Denver's Coors Field for Game 3 on Saturday.

The winner was starter Aaron Cook (1-0) and, despite giving up a hit in the tense bottom of the ninth, closer Huston Street earned his first save.

Philadelphia's Raul Ibanez drove in two runs, Ryan Howard ripped an RBI double and Jayson Werth drilled a solo homer. Shane Victorino had three hits for the 2008 World Series champions.

The losing pitcher was starter Cole Hamels (0-1). He left in the eighth when his wife went into labor.