On April 18, 1952 — On Opening Day in Brooklyn, Willie Mays is knocked unconscious when he smashes into the Ebbets Field wall after chasing pinch hitter Bob Morgan’s seventh-inning, two-out base-loaded line drive into the gap in left field. All three Dodgers baserunners cross the plate but do not score when the motionless Giants center fielder comes to his feet and jogs into the dugout, apparently unhurt, having held onto the ball after making a fantastic catch for the third out to end the inning.

Source:
National Pastime

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