Left-handers who played SS, post-1920:

1. Lou Gehrig, New York Yankees, July 14, 1934. Gehrig didn't actually play an inning at shortstop, but was listed as such in the starting lineup. Gehrig was forced out of the previous day's game in the second inning with an injury (described in the next day's New York Times as "a cold in the back that makes breathing difficult and swinging a baseball bat torture"), but insisted on maintaining his consecutive-game streak (then at 1,426). Leading off the game, Gehrig singled to right, was immediatedly pinch-run for by normal starting shortstop Red Rolfe, and returned to the team hotel. The next day, Gehrig would start at 1st base and bat 4th as usual.