Freezing temperatures can't cool off the Braves, who own the best record in the Major Leagues and will go for a three-game sweep of the Rockies on Wednesday afternoon at Coors Field.
Atlanta won both games of a doubleheader on Tuesday in frigid conditions and will look to complete its fourth sweep already in 2013. The Braves also swept the Cubs at home, plus the Marlins and Nationals on the road.
Tim Hudson will start for the Braves in his second attempt to reach career win No. 200.
Hudson is seeking to become the 110th player in Major League history to reach the milestone. But to become the third active pitcher with 200 victories, the right-hander will need to win at Coors Field for the first time in his 15-year career. Hudson is 0-2 with an 8.04 ERA in five starts at Coors Field.
"I obviously think about it because it's there," Hudson said of reaching the milestone. "But I don't change anything I do because of that. At some point this year, I'll get it."
The Braves snapped a three-game losing streak on Tuesday and are 3-3 on their current nine-game road trip.
The Rockies have lost three straight home games after winning their first eight at Coors Field. Still, Colorado is atop the National League West.
Tyler Chatwood will start for the Rockies on Wednesday in his season debut. The right-hander began the year with Triple-A Colorado Springs and will fill in for Jhoulys Chacin, who is on the disabled list with a back strain.
In three starts for Colorado Springs, Chatwood was 1-0 with a 1.84 ERA. He made 19 appearances with the Rockies last season, including 12 starts, and was 5-6 with a 5.43 ERA. Chatwood last faced the Braves in September and allowed six runs in three innings.
Braves: Pastornicky makes debut
• Shortstop Tyler Pastornicky was recalled from Triple-A Gwinnett on Tuesday, and he made his season debut in the second game of the doubleheader. Pastornicky pinch-hit in the eighth inning and flied out to right.
Jason Heyward landed on the 15-day disabled list after the outfielder had a successful appendectomy on Monday, opening a roster spot for Pastornicky.
Pastornicky, 23, made his Major League debut with Atlanta in 2012 and hit .243 with two homers and 13 RBIs in 76 games. In 14 games with Gwinnett this year, Pastornicky hit .351 and spent time at short and second base.
"Tyler's an interesting guy," Atlanta manager Fredi Gonzalez said. "He's an offensive guy. He's been playing a lot of second base in Gwinnett. He's played a couple games at short. So we'll use him."
Rockies: Helton itching to play
Todd Helton has not played since he incurred a left forearm strain on Friday, but he hopes to return to the lineup Wednesday.
Helton received a cortisone shot in the forearm and said he felt better Tuesday, though his arm was still stiff and swollen. He wants to avoid a trip to the disabled list.
"I got to start doing something pretty quick or they're going to think about the DL," Helton said.
Jordan Pacheco started in place of Helton in both games on Tuesday and went 3-for-8 with an RBI.
The Rockies could use Helton's bat on Wednesday. Helton is 12-for-18 (.667) in his career against Hudson with five doubles, one homer and nine RBIs.
• The Braves are 8-1 against the Rockies dating back to the start of last season.
• The Rockies have scored 109 runs in 20 games, the second most in the NL.
Austin Laymance is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.