The guy who threw down NASCAR superstar Denny Hamlin during a brawl with Joey Logano on Sunday was just suspended 1 race by the league ... officials announced Monday.
If ya missed it ... Hamlin and Logano really got into at Martinsville Speedway over the weekend -- carrying some on-track drama onto pit road.
The two stars were discussing their in-race driving ... when all the sudden Logano gave a hard shove to Hamlin's shoulder.
That's when Denny went after Joey ... and all hell broke loose -- with both of the drivers' pit crews hopping into the melee.