So, Mark Teixeira, who has been battling a cough for more than a month, hit the go-ahead homer in last night's 8-5 Yankees victory in Baltimore. Ivan Nova, the starting pitcher last night, struggled before leaving the game in the sixth inning with a sprained ankle. Clay Rapada, who relieved Nova, would leave the game with a viral infection after throwing just a third of an inning. Raul Ibanez, who reached base on a Chris Davis error in the sixth that scored two Yankee runs and tied the game at five, would leave the game in the ninth after getting hit by a pitch on the elbow. And David Robertson, who was given first crack at closing with Mariano Rivera on the disabled list, was unavailable last night because of a sore, left rib-cage muscle. The New York win makes four in four tries at Oriole Park this year and moves Joe Girardi's team to within a game and a half of the first-place O's. The Yankees — the ones who are healthy enough to play, at least — finish up their two-game series in Baltimore tonight.