DENVER (Interstat) — Jake McCarthy tripled with the bases loaded in the bottom of the ninth inning, driving in three runs to lift the Colorado Rockies to a 3-2 victory over the Boston Red Sox on Monday night at Coors Field.

McCarthy’s ground ball to left field chased home TJ Rumfield, Hunter Goodman and Cole Carrigg, erasing a 2-0 deficit and handing the Rockies their second walk-off win of the season. The triple was the fourth of McCarthy’s career and capped a rally that began when Rumfield singled off Red Sox reliever Aroldis Chapman leading off the ninth. Goodman followed with a single, and Carrigg dropped a bunt single to load the bases with nobody out.

McCarthy, who had struck out and popped out in his previous two plate appearances, drove a 1-1 pitch from Chapman — who took the loss and fell to 0-3 — past the charging left fielder Jarren Duran. All three runners scored easily, and the Rockies mobbed McCarthy near second base as the announced crowd of 26,910 roared.

Boston had grabbed a 2-0 lead in the sixth inning against Rockies starter Ryan Feltner. Wilyer Abreu singled to start the rally and scored on Willson Contreras’ double to right field. Contreras then came home on Caleb Durbin’s single to left, giving the Red Sox a two-run advantage that held until the ninth.

The Red Sox had few other opportunities against Feltner, who turned in a strong outing. The right-hander allowed two runs on four hits over six innings, striking out two and walking three. Feltner, who earned a no-decision, pitched well enough to keep Colorado within striking distance after the offense was shut down by Boston starter Jake Bennett.

Bennett was brilliant for the Red Sox, scattering four hits over six scoreless innings. The left-hander struck out nine, walked none and lowered his earned run average to 3.12. He retired the side in order in the first, second and fourth innings and worked around a leadoff single in the third and a one-out single in the fifth. Bennett handed the ball to the bullpen with a 2-0 lead after throwing 90 pitches.

Tyron Guerrero followed with a scoreless seventh, striking out one and allowing no hits. Garrett Whitlock worked the eighth but encountered trouble. Whitlock surrendered four hits in the inning, though the Rockies did not score because of two sharp outfield throws that cut down runners at the plate and at third base.

In the eighth, Edouard Julien led off with a single and Mickey Moniak singled to put runners on first and second. Willi Castro then singled to center, but Ceddanne Rafaela threw home to catcher Connor Wong, who tagged out Julien at the plate. Tyler Freeman followed with a single to right, but Abreu threw to third to catch Castro trying to advance, ending the inning.

The Red Sox threatened in the seventh and ninth but could not add insurance. Marcelo Mayer doubled with one out in the seventh off reliever Brennan Bernardino, but Connor Wong grounded out and Rafaela flied out to strand Mayer at third. In the ninth, Durbin walked with one out, moved to second on a groundout and reached third on a flyout, but Victor Vodnik struck out Mayer to end the inning.

Vodnik, who pitched a scoreless eighth and ninth, earned the win, improving to 2-2. He allowed no hits and one walk while striking out one. Bernardino worked a hitless seventh, striking out one.

The Rockies outhit the Red Sox 12-5. Colorado’s offense, which had managed only three singles through seven innings, broke through against Chapman in the ninth. Chapman, a veteran left-hander, suffered his third loss of the season and saw his ERA rise to 5.40.

Caleb Durbin led Boston with two hits, including a double in the second inning, and drove in the team’s second run. Contreras added a double and an RBI. Mayer had one hit, a double. Boston’s other two hits came from Abreu and Durbin’s single. The Red Sox drew four walks but grounded into two double plays.

For Colorado, Freeman collected three hits. Julien, Moniak and Castro each had one hit. Rumfield, Goodman and Carrigg each singled in the ninth. Carrigg’s bunt single was his second hit of the game.

The loss dropped Boston to 31-45, while Colorado improved to 31-48. Both teams have identical records, though the Rockies sit in fifth place in the National League West and the Red Sox are fourth in the American League East.

Boston had won three of its previous four games before Monday, taking two of three from Seattle over the weekend. The Red Sox had won five of their last seven. Colorado had lost its previous two games, including an 8-6 defeat to Pittsburgh on Sunday, and had dropped seven of its last 10.

The game lasted 2 hours, 14 minutes, a quick contest by Coors Field standards. The temperature at first pitch was 82 degrees with light wind.

Boston next plays the Rockies again on Tuesday night at Coors Field in the second game of the three-game series. After that, the Red Sox return home for a four-game set against the New York Yankees beginning Thursday. Colorado will host Boston again Tuesday and Wednesday before traveling to Minnesota for a weekend series against the Twins.

Pre-game projections by Interstat’s game simulator had predicted a final score of Boston 3, Colorado 5. Interstat’s ELO system had given Boston a 64.90 percent probability to win. The Red Sox had been installed as the pregame favorite with a spread of minus-1.5. The total of five runs went over the over/under line of 12.