Zack Greinke claims there are no lingering effects from an injury suffered in a benches-clearing brawl more than seven weeks ago.
Whether that's the case or not, the former Cy Young winner has undoubtedly been off his game since returning.
Signed to a $147 million, six-year deal in the offseason, Greinke (2-1, 4.38 ERA) is trying to get back into form after missing more than a month with a broken collarbone suffered during a fight in San Diego on April 11. The right-hander has made three starts since returning, going 0-1 with a 10.13 ERA in the last two - each lasting just four innings.
"I felt good, actually," Greinke told the Dodgers' official website after giving up six runs - four earned - and 10 hits in Monday's 8-7 victory over the Los Angeles Angels.
Manager Don Mattingly doesn't seem too concerned about Greinke's recent struggles.
"I feel he's been behind the 8-ball the whole year, but I do think he'll get where he needs to get to," Mattingly said.
Greinke is 1-1 with a 5.13 ERA in five starts against Colorado, none since 2011 while with Milwaukee.
He'll toe the rubber after the Dodgers (23-30) avoided a third consecutive defeat with Friday's 7-5, 10-inning victory. Los Angeles rallied after Todd Helton's game-tying, two-run homer in the ninth.
The victory capped off a 10-17 month - the worst May percentage-wise (.370) in club history - but the last-place Dodgers are just 6 1/2 games behind NL West-leading Arizona.
"If we can just stay afloat until these big boys come back, we'll be fine," Skip Schumaker, who is replacing the injured Matt Kemp (right hamstring strain) in center field, said after extending his hitting streak to eight.
The Rockies (28-27) aren't fine, dropping six of seven following a 6-1 run that had them tied with the Diamondbacks atop the West. Four of Colorado's last six losses have been by two runs or fewer.
"We've played a lot of tight games this year and sometimes the reward for competing like that is getting punched in the gut," manager Walt Weiss said.
Jhoulys Chacin (3-3, 3.90) will get the ball as Colorado tries to avoid a season-worst fourth consecutive home loss. The right-hander, 0-2 with a 7.71 ERA in three May starts at Coors Field, threw seven innings of two-run ball in his last appearance, Monday's 3-2, 12-inning loss at Houston.
Chacin's only start against the Dodgers last season was a bad one, yielding seven runs and a career high-tying 11 hits over 4 2-3 innings of a 7-6 home loss May 1.
He gave up a three-run homer to Andre Ethier in that game. Ethier is a .438 hitter (7 for 16) off Chacin.
Juan Uribe is hitless in 15 at-bats in that matchup, but he's 10 for 22 in his last eight games after going 2 for 4 on Friday with an RBI double and a 10th-inning single that plated Schumaker.
Carlos Gonzalez should return to the Rockies' lineup after striking out in a pinch-hitting appearance Friday. Gonzalez has the second-best batting average (.360) against the Dodgers among active players.
He's 3 for 9 with a double off Greinke.
The Dodgers' last series win in Denver was a three-game sweep Sept. 27-29, 2010.