Post Malone is fighting coronavirus in the most Posty way possible -- he's rounding up his biggest celeb friends for a virtual beer pong tournament for the ages!!!
TMZ has learned ... the "Circles" singer teamed up with his good friend and fellow rapper, MIKE -- FKA Mike Stud -- to put on a huge Instagram Live event to raise money for COVID-19 relief, dubbed "The Ballina Cup."
We're told the bracket will include 16 teams ... with names like Travis Kelce, Rob Gronkowski and his SI Swim model GF Camille Kostek, Johnny Manziel, Machine Gun Kelly, Kane Brown, MLB aces Trevor Bauer and Mike Clevinger and more slated to participate.