Solarte got the nod at second base for the second consecutive day on Sunday, as the Yankees try to give Brian Roberts (sore right knee) extra rest leading into Monday's off-day.
Girardi said that he prefers to play Solarte at second base over Kelly Johnson, who started at third base, because most of Johnson's defensive attention has been focused at the infield corners.
"Kelly really hasn't done a lot of work at second this year," Girardi said. "Solo has done a little bit more, and that's kind of why we stuck with it."
Bryan Hoch is a reporter for MLB.com. Follow him on Twitter @bryanhoch and read his MLBlog, Bombers Beat. This story was not subject to the approval of Major League Baseball or its clubs.