R3, R1 with one out. Medium fly to left centerfield. R3 tagging to score. R1 advancing to second base attempting to determine if the CF will catch the ball. As the outfielders converge on the ball, LF calls off CF, catches the ball for the second out, and in one motion fires the ball toward 1st in an attempt to double-off R1. R3 crosses the plate as 2B relays the throw to 1B, just beating R1 back to the bag for the 3rd out. Score the run?