Pistons' Evan Fournier Fined $25k For Punting Ball After Loss To Heat

Evan Fournier's decision to go all David Beckham after losing to the Miami Heat just set him back a huge wad of dough -- the Detroit Pistons player was fined $25k for the move.

The moment went down shortly after the home team lost in devastating fashion ... with Bam Adebayo chucking up a game-winning three-point shot at the buzzer to secure the 104-101 win.

As the victors celebrated at center court, Fournier -- who had 18 points in the losing effort -- was in a much worse mood ... taking the game ball and punting it to the rafters.

NBA executive VP and head of basketball ops Joe Dumars announced the hefty fine on Monday ... specifically stating it was for "kicking the game ball into the spectator stands."

It was just another lowlight for the Pistons -- they currently sit almost last in the Eastern Conference with a 12-55 record.