BOWIE, Md. — The Bowie Baysox, the Double-A affiliate of the Baltimore Orioles, fell in 12 innings to the Richmond Flying Squirrels, the Double-A affiliate of the San Francisco Giants, by a final of 4-3 at The Diamond on Saturday night. Bowie (7-5, 39-41) faced Richmond starting left-hander John Michael Bertrand, who had thrown 20 scoreless…