Rockies 10, Dodgers 0: Tyler Colvin homered and drove in three runs while Jeff Francis combined with three relievers on a four-hit shutout as host Colorado spoiled Josh Beckett's debut with Los Angeles.
Chris Nelson scored three runs while falling a homer shy of the cycle and DJ LeMahieu had two RBIs for the Rockies, who have won six of eight at home.
Acquired from Boston in a blockbuster nine-player trade Saturday, Beckett (0-1) fell behind early as his second pitch of the game was drilled into the right-field seats by Colvin. The right-hander allowed three runs and seven hits over 5 2/3 innings as he remained winless since July 15.
Nelson hit a two-out triple and scored in the fourth, then singled and came home in the sixth to make it 3-0. His one-out double ignited a seven-run rally in the eighth that was highlighted by Colvin's two-run triple and rookie Wilin Rosario's two-run homer.
Rosario's blast was his 21st of the season, a franchise record for a catcher. Charles Johnson belted 20 homers with the Rockies in 2003.
Francis (5-4) yielded a single and two doubles over five innings, walking one and striking out six. Josh Roenicke worked a hitless frame, Rex Brothers allowed a hit in a 1 1/3 innings and Matt Belisle recorded the final five outs for his second save.
Colorado's Josh Rutledge continued his success as a pinch hitter, delivering an RBI single in the sixth. The rookie is 5-for-8 with five RBIs in the role.
Shane Victorino tripled and stole a base for the Dodgers, who fell 2 1/2 games behind both idle San Francisco in the National League West and St. Louis in the race for the second wild-card spot.
GAME NOTEBOOK: Colorado OF Dexter Fowler was kept out of the starting lineup for the fifth straight game because of an ankle injury. ... Beckett lost for the first time in five career starts at Coors Field. ... The Dodgers optioned Shawn Tolleson to Single-A Rancho Cucamonga and recalled fellow RHP Josh Wall from Triple-A Albuquerque. Wall made his major-league debut at New York on July 22, picking up the win after tossing one scoreless inning against the Mets. ... Rockies SS Troy Tulowitzki (groin) went 2-for-4 with a solo home run and 1B Jason Giambi (viral infection) was 2-for-3 for Double-A Tulsa on Monday. Both could be activated from the disabled list as early as Saturday.