WATCH: Astros slugger Yordan Álvarez gets four-strike at-bat after no one realized he struck out

Three strikes and you’re out. At least that’s the case most of the time in baseball. However, Houston Astros slugger Yordan Alvarez did get a bonus strike in one of his at-bats against the Boston Red Sox on Wednesday.

In the bottom of the third inning, Álvarez faced Red Sox starter Rich Hill and he struck out on four pitches. Álvarez took a strikeout to make it 1-1, fouled off the next pitch and then looked at strike three.

The problem was that no one in Minute Maid Park noticed that Álvarez had struck out (check out the video here). None of the Red Sox players or coaches protested as Álvarez remained in the batter’s box, the other umpires failed to correct the error, and even the announcers continued unaware of what was happening.

Here’s statistical proof of the blunder, courtesy of MLB.com’s Gameday.

The good news for the Red Sox is that the mistake didn’t cost them. On the pitch after his expected strikeout, Álvarez dribbled a routine groundball to first base for an out.

If there’s one player who doesn’t need extra help at the plate, it’s Álvarez. Entering Wednesday’s game, he was hitting .307 with 30 home runs and 71 RBI while leading MLB in on-base percentage (.413) and OPS (1.076).