Detroit Tigers star Spencer Torkelson absolutely lost it on an umpire after a strike call on Monday night ... going on an f-bomb-laced rant -- and the first baseman's whole temper tantrum was picked up on a hot mic!!!
The PG-13 scene played out in the bottom of the seventh inning of the Tigers' tilt with the Royals at Comerica Park ... when Torkelson was up to bat with two runners on.
Down by just a run, the No. 1 overall pick in the 2020 MLB Draft was looking to help his team take a late lead .