After Monday's series opener was washed out by rain, the two clubs are scheduled for their original 7:05 p.m. ET start, when more showers are expected in Pittsburgh.
That means Monday's pitching matchup gets pushed back a day, with Colorado's Jamie Moyer slated to take the mound against Pittsburgh's Kevin Correia.
With a win on Tuesday night, Moyer would become the oldest pitcher to ever win a game in the Major Leagues. Of course, Moyer, 49, is now competing with himself, after he broke that record his last time out with seven masterful innings against San Diego.
At 49 years and 151 days, Moyer surpassed the previous record held by the Brooklyn Dodgers' Jack Quinn, who set the record in 1932. Moyer also tied Hall of Famer Jim Palmer for 35th place on the all-time wins list with 268.
"It's a story that only sport can come up with -- the fact that he's been able to make the club, No. 1, and to win a game, No. 2. ... [We] know we're going to get to see him, and he's going to battle and he's going to compete," said Pirates manager Clint Hurdle.
In three starts this season, Moyer is 1-2 with a 2.55 ERA in 17 2/3 innings. He faces Correia, who has posted nearly identical lines in both of his starts this season. Correia allowed a run on four hits in six innings against the Dodgers on April 10, and five days later, got the win in allowing a run on three hits through six in San Francisco.
Pittsburgh has been anemic at the plate -- coming in with a team batting average of .202, easily lowest in the Majors. But the Pirates have remained competitive, thanks to a pitching staff that ranks third in the National League in ERA (2.53).
The Rockies aren't scheduled to return to Pittsburgh this season, so it's especially vital the teams get these three games in over the next couple of days.
Rockies: Aggressive baserunning
The Rockies have 14 stolen bases in 14 games, and manager Jim Tracy said that aggressiveness while running the bases has become an extra weapon for his team.
"There are situations where we force the action from ... here in the dugout, and there have been other instances where some of our players have been on their own and made very, very good decisions in picking pitches to run on," Tracy said.
Michael Cuddyer has not only been hitting, but he's been hitting in important situations for the Rockies. He hit a go-ahead double in the eighth inning on Sunday and leads the team in RBIs (11), hits (19) and doubles (8).
"A man in scoring position and a one-run game, the worst that can happen is you fail," Cuddyer said. "And that happens a lot. So, yeah, you've got to relish those opportunities."
Pirates: Correia rebounds from rough end to spring
In his last two starts of Spring Training, Correia allowed 14 runs in just 7 1/3 innings pitched. His first two regular-season starts have been the polar opposite, as he has pitched very well in allowing just two runs over 12 innings.
Pittsburgh hasn't scored more than five runs or given up more than five runs in a game this season, the longest such streak to start a year in the NL since the 1965 Pirates.
To make up for Monday's rainout, the two clubs are slated for a doubleheader on Wednesday. The first game will begin, as originally scheduled, at 12:35 p.m. ET, while the second will begin 30 minutes after the conclusion of the first.
Pitching matchups for the doubleheader: In Game 1, Colorado's Juan Nicasio (1-0, 6.19) opposes Pittsburgh's James McDonald (0-1, 3.45). Game 2 will see the Rockies' Jhoulys Chacin (0-1, 4.80) face the Pirates' Charlie Morton (0-1, 3.60).
Both teams have an off-day on Thursday, which is vital for the pitching staffs. They would have had to scramble to find a starter for Sunday or risk pitching someone on three days' rest.