Chase Dollander picked up a win in his major league debut, tossing five solid innings, and the Colorado Rockies beat the Athletics 12-5 in Denver on Sunday.

Dollander (1-0), the team’s first-round pick in 2023, allowed four runs on seven hits and struck out six but was backed by Colorado’s best offensive output of the season.

Brenton Doyle finished with three hits, including his first home run, and drove in four runs, Ezequiel Tovar tied his career-high with four hits and Kris Bryant had two hits for the Rockies, who snapped a six-game losing streak.

Tyler Soderstrom and Lawrence Butler homered and singled and Miguel Andujar had two hits for the A’s.

Dollander retired Butler on the first pitch of his career but Brent Rooker singled and Soderstrom hit a two-out, two-run homer to right, his fourth of the season.

The Rockies rallied in the bottom of the first against Joey Estes (0-2). Doyle led off with a homer, Tovar singled and stole second and then Tovar scored on Bryant’s two-out single.

Colorado took the lead in the second. Tyler Freeman was hit by a pitch, Mickey Moniak walked and Doyle and Tovar hit consecutive doubles to make it 5-2. Freeman’s sacrifice fly in the third drove in Bryant.

Estes allowed six runs on six hits in three innings.

The A’s got one back in the fourth with three straight singles, but Tovar doubled and scored on a single in the bottom of the inning to restore the four-run lead.

Butler led off the fifth with his first home run of the season, but Dollander retired the next three batters to cap his afternoon, and the Rockies bullpen closed it out.

Jake Bird struck out five of the six batters he faced in the sixth and seventh innings, Luis Peralta was hit by Rooker’s line drive leading off the eighth but was able to relay the ball to first for the out but left after that one pitch.

The Rockies broke it open in the eighth. Doyle had an RBI single and Tovar and Hunter Goodman had two-run singles