Reds starter Mat Latos is hoping to regain the form he had earlier in the season, when he made 17 consecutive starts without a loss, and prove to Cincinnati that his sprained right ankle won't be a hindrance as the club makes a postseason run.
Latos (8-3, 4.30 ERA) lasted just five innings in his most recent outing in Houston after spraining his ankle on the mound after a pitch in the fifth.
"I felt it the rest of the inning, especially the last couple of pitches. But it's fine now," Latos said after the game with a wrapped ankle.
Latos allowed two runs on eight hits and earned his eighth win of the season.
He'll face off against Jonathan Sanchez, who is looking to bounce back from his rough Rockies debut Monday at Arizona.
After being shipped from Kansas City to Colorado on July 20, Sanchez didn't get off on the right foot with the Rockies, lasting just four innings while giving up five runs on six hits and walking four.
"I didn't know what to expect, because I hadn't seen him in a while," said Rockies manager Jim Tracy. "He's had some trouble spots over his course of time in Kansas City, but we saw some good breaking pitches from him and his fastball at times was well located."
Sanchez (1-7, 8.01 ERA) hasn't recorded a win since his first start of the year on April 8, and is 0-3 with a 13.09 ERA in July.
Reds: Chapman dominates in ninth inning
With his shutout appearance Saturday night in Colorado, closer Aroldis Chapman has now converted his past 13 save opportunities, bringing his total to 21 on the season.
Chapman has strikeouts for 35 of his past 47 outs recorded, but the southpaw slinger still has managed to keep his pitch count relatively low this season, conserving his arm.
"He has the ability to come in and out and up and down," manager Dusty Baker said. "He's feeling comfortable and very confident with what he's doing. And he's using more than just his fastball. Getting ahead helps to use more than just your fastball."
Despite allowing two hits Sunday, Chapman threw just 17 pitches en route to his 21st save, and he has seen more action in back-to-back days numerous times this season.
"That helps a lot. It puts him in a position even to possibly go a third day if that second day is not a lot of work," Baker said.
Chapman has worked three straight days just once this season but has thrown in 11 of the club's 15 games since the All-Star break.
With Saturday's 9-7 win against the Rockies, the Reds are now 10-2 without Joey Votto, who left the lineup July 16. The club has won nine straight games and 16 of 18.
Cincinnati has averaged 4.6 runs per game in Votto's absence.
Rockies: Infield adjusted after Scutaro trade
After trading second baseman Marco Scutaro to the Giants on Friday night, the Rockies were in search of infield depth.
On Saturday, Colorado recalled Tommy Field, who Tracy said can play both second base and shortstop, from Triple-A Colorado Springs.
Field, who hit .271 with three RBIs in 16 games last season in his first Major League action, was available Saturday against the Reds but did play.
"I want to get another look at his offense," Tracy said. "I'll try to work him in."
DJ LeMahieu started in Scutaro's spot at second base on Saturday after being recalled from Colorado Springs on July 17.
The Rockies already have been players in this year's trade market, having finalized three moves this season, and the club may not be done yet.
Closer Rafael Betancourt, 37, and backup catcher Ramon Hernandez, 36, have both been tossed around as possible departures from Colorado. Both veterans are under contract until next season.
"There's an understanding amongst our veteran players that this is a business," Tracy said. "There's certain things that have to be done."
The Rockies seem to be shifting toward a new, younger era and trading Betancourt and Hernandez could continue that.
Reds right fielder Ryan Ludwick is batting .324 with six homers and 13 RBIs in July.
Josh Rutledge went 3-for-5 after being moved to the No. 2 hole in the lineup for the first time Saturday. The rookie is now hitting .370 with six RBIs since being called up two weeks ago.