BALTIMORE — David Adams was preparing for a road trip with his teammates at Class AAA Scranton/Wilkes-Barre a couple of weeks ago when he was made aware of several news reports speculating that he might be called up by the Yankees. Adams, a versatile infielder, decided to squeeze a few extra items in his suitcase, just in case.

Sure enough, Adams joined the Yankees last week and had an immediate impact. In five games, he was hitting. 333 and had his first major league home run in Monday’s 6-4 victory over the Baltimore Orioles. Before Tuesday’s game at Camden Yards, Adams said he was trying to stick to a routine.

“Get my body ready and get my mind ready,” said Adams, 26. “It was tough the first few days, because it was something new, and you’re dealing with the subway and this and that. I feel like I’m finally figuring out how to get things going.”

Among the players who have propelled the Yankees to the top of the American League East standings, Adams is an anomaly. Unlike Travis Hafner and Lyle Overbay, who joined the team as free-agent acquisitions and have played huge roles in the absence of Kevin Youkilis, Derek Jeter and Mark Teixeira, Adams came up through the Yankees’ minor-league system. A third-round draft pick out of the University of Virginia in 2008, Adams was hitting .316 for Scranton/Wilkes-Barre this season.