DENVER, Sept. 25 (UPI) -- Tim Lincecum shut Colorado down on two hits over eight innings Friday and the San Francisco Giants hung onto first place in the NL West with a 2-1 victory.

Lincecum (15-10) baffled the Rockies on one run, walking none and striking out nine to give the Giants their 18th straight game in which they've held the opposition to three runs or fewer -- the longest such streak since the beginning of the "live ball" era in 1920.

Pat Burrell's two-run homer to left in the seventh inning erased a 1-0 deficit and allowed San Francisco to retain first place in the National League West. The Giants entered the contest with a half-game lead over the San Diego Padres.

Jhoulys Chacin (9-10) took a loss, a bitter one for the Rockies as they struggled to make up ground in the NL West. He yielded two runs on three hits over seven innings.

Third-place Colorado fell for the fifth straight time, dropping 4 1/2 games behind San Francisco. They remained 3 1/2 games behind Atlanta in the NL wild-card chase.