The Orioles topped the Tigers 4-1 on Monday to improve to 4-0 on the season, their best start since 1997. Baltimore got a three-run home run from Brian Roberts and Jake Arrieta allowed one run in six innings in front of a sellout crowd at Camden Yards. The Orioles have not yet trailed, haven't given up more than one run in a game and have outscored the competition 17-4.