BALTIMORE — After starting the season 4-0, even the most pessimistic of fans had to be feeling good and rightfully so. Detroit ace Justin Verlander, however, provided a strong dose of reality in a stellar eight-inning, nine-strikeout performance to lead the Tigers to a 7-3 win over the Orioles, sending Baltimore (4-1) to its first loss of the season. Of course, a little perspective is in order. The Orioles weren’t going undefeated this season, just like there’s no reason to harp on the first defeat of 2011. These nights will happen with any team in any season, especially when you’re facing one of the few bona fide aces in the American League. “He’s one of the best pitchers in the game,” manager Buck Showalter said. “You know, four-pitch mix and not a whole lot of tendencies in the sequencing [of pitches] and understands what he’s doing out there. Very athletic.” Orioles starter Brad Bergesen, on the other hand, was ineffective in his first work since a spring training outing on March 25 when he was hit in the arm with a line drive. The right-hander went 3 1/3 innings, allowing four runs (two earned) and five hits before being lifted