The dominoes are now falling quickly on the starting pitching market, and the Orioles are looking to make an acquisition before the well runs completely dry.

Dan Connolly of the Baltimore Sun heard from a source Tuesday that the Orioles front office has increased its show of interest in free agent right-hander Ervin Santana since Bronson Arroyo, a target of the O’s at one point, signed a two-year, $19 million deal last Friday with Diamondbacks.