Every Sunday, Boston Globe photographer Stan Grossfeld asks the subject of one of his photos to explain what’s happening in the shot.

Who’s up today: Red Sox outfielder Jacoby Ellsbury, with his tongue out, takes part in a sliding drill during spring training at Fort Myers, Fla., Feb. 19, 2013.

Ellsbury: “What was I thinking? Safe! No throw. As far as the tongue goes, I had no idea it was out.”