SAN FRANCISCO — San Francisco Giants ace Tim Lincecum has been scratched from his scheduled start Tuesday night due to inflammation in the lower left side of his back.

Giants manager Bruce Bochy said he hopes that Lincecum, the reigning NL Cy Young Award winner, will take his next turn in the rotation. That start could be as soon as Sunday against the Los Angeles Dodgers.
Lincecum was seen by a back specialist on Tuesday and underwent tests.
The Giants recalled top pitching prospect Madison Bumgarner to make his highly anticipated major league debut Tuesday night against San Diego. Bumgarner was the Giants’ top draft pick in 2007, selected 10th overall.
The 20-year-old Bumgarner has made a rapid ascent through the farm system, similar to that of Lincecum, who was the 10th pick in the 2006 draft. Lincecum spent just one full season in the minors before being called up in 2007.
Bumgarner was a combined 12-2 with a 1.85 ERA and 92 strikeouts this year in 131 1-3 innings between Double-A Connecticut and Class-A San Jose. He went 15-3 with a 1.46 ERA in 24 starts last year for Class-A Augusta, his first year as a professional.