Credit: Associated Press
The Orioles knew they were taking their unblemished record into a tough environment against a Red Sox team primed to perform in David Ortiz's final home opener at Fenway Park.
Baltimore won with offense that had been missing during recent trips to Boston.
Chris Davis hit a tiebreaking, three-run homer off new Boston closer Craig Kimbrel in the ninth inning and drove in five runs, carrying the Orioles over the Red Sox 9-7 Monday.
The Orioles improved to 6-0 and remain the lone unbeaten team in the major leagues.