Orioles (6) @ Red Sox (5)

The Baltimore Orioles held off the Boston Red Sox for a 6-5 victory in the day part of a day/night doubleheader on September 19, 2011 in Boston. Robert Andino, Nolan Reimold and J.J. Hardy hit Green Monster home runs for the O's.

The Red Sox lost by one run to the Orioles in the first half of a day/night doubleheader, in part due to a controversial call on a ball hit by David Ortiz.