BALTIMORE -- Wilin Rosario gave the Colorado Rockies the lead for good with his two-run homer in the seventh inning, and the Rockies banged out four homers in the final four innings en route to a 6-3 victory over the Baltimore Orioles Friday night at Camden Yards.
The Rockies had trailed most of the game before getting their power bats out. After Nolan Arenado's RBI single in the fifth, they tied it at 2-2 when Charlie Culberson hit his first major league homer, a solo shot to start the sixth that he lined into the left-field seats.
That set up Rosario's blast in the seventh. Michael Cuddyer was walked by Orioles starter Wei-Yin Chen (6-6) to start the inning, and Rosario (2-for-4, two RBIs) sent a fly ball to right that just made it onto a ledge near the foul pole for a two-run homer and a 4-2 Rockies lead.
Charlie Blackmon replaced Culberson in left field in the seventh, and Blackmon belted a solo homer in his first at-bat. That came in the eighth off Francisco Rodriguez and went on to Eutaw Street to give the Rockies (58-65) a 5-2 lead.
Rodriguez left one batter later with a right groin strain.
Todd Helton added the last homer, a solo shot off struggling Orioles closer Jim Johnson in the ninth. That was Helton's 362ndcareer homer, passing Joe DiMaggio for 76th on the all-time home run list.
Colorado starter Juan Nicasio (7-6) had control problems at times, walking four while striking out two in his six-inning stint, but the right-hander didn't run into too much trouble overall and ended his two-game losing streak.
He gave up two runs on four hits and kept the Orioles (65-56) quiet. Josh Outman, Matt Belisle and Rex Brothers combined for the final three innings to give the Rockies their sixth win in seven games.
The Orioles' only hit after the third inning was a Matt Wieters homer off Brothers in the ninth.
Baltimore has lost four straight games.
The Orioles quickly jumped in front when Nate McLouth led off the first inning with a home run to right on Nicasio's third pitch. McLouth crushed a 1-1 fastball for his eighth home run this season, giving the Orioles a 1-0 lead.
Baltimore added another run in the third when Adam Jones got a bases-loaded single for a 2-0 lead. But Nicasio then retired Nick Markakis and Wieters as the Orioles left the bases loaded, and the Rockies stayed close.
Colorado couldn't do much early against Chen. The Orioles left-hander gave up a Troy Tulowitzki double in the first before retiring the next 10 in a row.
But Rosario stopped that streak with a lead-off double in the fifth. He moved to third on a Chen wild pitch and scored later on an Arenado single, cutting the Baltimore lead to 2-1.
NOTES: The Orioles announced that pitching coach Rick Adair took a leave of absence for personal reasons. No timetable was given for his return, and bullpen coach Bill Castro will take over Adair's job responsibilities in his absence. Scott McGregor, one of the best pitchers in franchise history, will become the bullpen coach during this time...McLouth's lead-off homer in the first was his second lead-off homer this season. It also snapped a recent 0-for-8 slide...Rosario's fifth-inning double stretched his hitting streak to eight games...This is the first time the Rockies have come to Baltimore since 2007, when Colorado took two of three from the Orioles. That was the last time these two teams met before this series.