You left out half of it. It's also INTENDED to protect the runners to prevent an infielder from dropping the ball intentionally to get multiple force outs. The ball dropped in mid left field... The MOST he'd be able to get there is the guy at third. Also, 9 times out of 10, the infielder is waived off a catch like that, so, no... I don't see how you consider that "ordinary effort." it was a blown call. Show me another situation in MLB history where what happened last night was called an infield fly by an outfield umpire... Who wouldn't have been working a game in the regular season, anyway. He's there to watch the line past him, signal home runs, watch catches in the outfield, and help with appeals.