Monday night that means Tim Lincecum.
Since San Francisco's game Sunday against the Cubs was postponed due to inclement weather, the Rockies will see the two-time NL Cy Young Award winner at Coors Field.
"You're going to get them all at some point in time, and so you have to go out there and do your thing and compete against those guys and beat them," Tracy said of facing the league's top hurlers. "You won't beat them every single time, but you have to go out there and do your fair share when you're facing the top end of the rotation, guys from other ballclubs."
Meanwhile, the Rockies will give right-hander Clayton Mortensen another chance at the starter role, as Esmil Rogers continues to battle injury. Mortensen had a no-decision in his first start, which came against the Giants, allowing one earned run on four hits in six innings.
Two of his four appearances this season have come against San Francisco. He owns a 1.80 career ERA against the Giants.
But the Rockies have sputtered against the defending World Series champions, mustering just one win in six tries against the Giants this season.
"When you play the San Francisco Giants, you are going to face a pretty doggone good starting pitcher every single day," Tracy said. "So to sit here and say, 'Oh, yeah, we'll throw seven, eight or nine [runs] out there against that guy,' that's a ludicrous thought process."
The Rockies haven't had much success against Lincecum of late. When he faced the Rockies at Coors Field on April 18, Lincecum took a no-hitter to the seventh before Carlos Gonzalez broke it up with a single.
Lincecum is working on a 17-inning scoreless streak and a 2.11 season ERA.
"Timmy's stuff has picked up from last year," Giants manager Bruce Bochy said. "He's throwing the ball great."
Giants: Keeping it close
Thirty-two of the Giants' 39 games this season have been decided by three runs or fewer, the most among all teams in baseball. The club's string of 19 straight games decided by such a margin ended Friday, in an 11-4 loss to the Cubs. Last season, 115 of the Giants' 162 games were decided by three runs or fewer.
Bochy -- after saying Saturday that he'd like to see Mark DeRosa entrench himself at third base in the absence of Pablo Sandoval -- is expected to have DeRosa bat seventh and play third on Monday. Miguel Tejada would bat eighth and play shortstop and Mike Fontenot would become the utility infielder.
Rockies: Helton heating
Rockies first baseman Todd Helton has provided Colorado with a surge of offense that was often missing from the veteran last season. Helton has hits in the Rockies' last five games, compiling a .444 average (8-for-18) in that span with two doubles, three homers and four RBIs.
Lincecum has history at Coors Field that dates back beyond this season. Last year, it was his "juiced balls" comments that were caught on television and sparked changes at the ballpark in how baseballs and the ballpark's humidor were monitored by the league.
Sunday's rained-out Cubs-Giants game will be made up on June 28 in Chicago as part of a day-night doubleheader.
With the loss Sunday, the Rockies have fallen in six straight day games. They began the season 7-1 in afternoon contests.