Colorado @ Miami preview

Last Meeting ( Jul 25, 2013 ) Miami 5, Colorado 3

The Colorado Rockies are 11 games below .500 and out of postseason contention, but Wilin Rosario is hardly playing out the string. The 24-year-old, in his second full season, takes a major league-high 13-game hitting streak to Miami when the Rockies on Friday begin a weekend series against the Marlins. Rosario hit a three-run blast - his second home run in as many nights - in Colorado's 5-4 loss in Philadelphia on Thursday to increase his RBI total to 70, tops among major-league catchers.

It was the second consecutive walkoff loss for the Rockies, who are 9-27 in their last 36 road games and may be without closer Rafael Betancourt for the third time this season. Miami is coming off a 6-0 loss to the Los Angeles Dodgers - its third straight setback - and is 2-5 on its 10-game homestand. Colorado's Jhoulys Chacin, who is 4-4 with a 2.14 ERA in 10 road starts, returns from the bereavement list and will face Tom Koehler, who is winless in three starts.

TV: 7:10 p.m. ET, ROOT (Colorado), FSN Florida (Miami)

PITCHING MATCHUP: Rockies RH Jhoulys Chacin (11-7, 3.24) vs. Marlins RH Tom Koehler (3-8, 4.66)

Chacin allowed three runs and nine hits in 5 1/3 innings in a 7-2 loss at Baltimore on Sunday after learning Saturday night of his grandmother's death in Venezuela. The 25-year-old is 0-4 with a 6.35 ERA, 1.88 WHIP and .329 batting average against in five games (three starts) against Miami, including a 4-2 loss July 23 when he yielded three runs (two earned) and seven hits in seven innings. Giancarlo Stanton is 1-for-9 with four strikeouts against Chacin.

Koehler allowed three runs, seven hits and four walks in five innings in Miami's 6-5 victory over San Francisco on Sunday. The 27-year-old Bronx native hasn't pitched six innings since recording six shutout frames in a 3-0 victory over the New York Mets on Aug. 1. Koehler, who has issued 38 walks against 72 strikeouts in 102 1/3 innings, won at Colorado 3-1 on July 22 when he allowed one run and eight hits while striking out seven in seven innings.

WALK-OFFS

1. Betancourt left Thursday's game after yielding Michael Young's game-tying infield hit with an apparent leg injury. The 38-year-old has spent two separate stints on the disabled list (appendicitis, groin), missing about one month each time.

2. Rosario hit his 50th career home run Wednesday in his 236th at-bat - second-quickest to reach 50 in major-league history among catchers (Mike Piazza, 233).

3. Miami won three of four in Colorado from July 22-25 when the teams combined for 21 runs.

PREDICTION: Rockies 3, Marlins 2