Ex-NFL player Mitch Petrus -- who won a Super Bowl with the Giants in 2012 -- tragically died of a heat stroke on Thursday. He was 32 years old.
Petrus had complained about feeling ill on Thursday after spending all day outside working at his family's shop ... and was taken to a local hospital, according to the Arkansas Democrat Gazette.
Officials say he died at 10:45 PM after suffering a heat stroke.
Petrus was a standout guard with the Arkansas Razorbacks after walking on to the team -- earning All-SEC honors in 2007 and 2009 -- and was drafted by the Giants in the 5th round of the 2010 NFL Draft.
While at Arkansas, Petrus blocked for stars Darren McFadden and Felix Jones ... and didn't give up a single sack during his senior year.
He also played for the New England Patriots and Tennessee Titans before retiring from the league in 2013.
Petrus played bass guitar in his band, Vikings of the North Atlantic ... and also made regular local TV appearances as a Razorbacks football analyst.
Petrus' Giants teammate, Lawrence Tynes, shared his condolences ... saying "RIP Mitch Petrus, another loss to our Giants family way too young. Fun dude who played hard. Prayers to his family and friends."
#RIP