Former NFL player Matt Ulrich -- who won a Super Bowl with the Indianapolis Colts in 2006 -- has died, Jim Irsay announced Wednesday. He was 41 years old.
Details surrounding his death have not been revealed at this time.
Irsay shared his condolences on X just minutes ago ... saying even though the offensive guard was with the team for a short time, his presence was felt throughout the organization.
"I am heartbroken to hear of the passing of Matt Ulrich," Irsay said in a heartfelt post. "Matt was with us only two seasons, but left his mark on many."
"Great guy, I hear he was a great dad---and he was a Super Bowl champ. My prayers to his family. 🙏"
Ulrich was a star athlete at Streamwood High School in Illinois ... receiving high honors in football and shot put before attending Northwestern.
I am heartbroken to hear of the passing of Matt Ulrich. Matt was with us only two seasons, but left his mark on many. Great guy, I hear he was a great dad---and he was a Super Bowl champ. My prayers to his family. 🙏 pic.twitter.com/Cb21IkP1XT— Jim Irsay (@JimIrsay) November 8, 2023
Ulrich -- who went undrafted -- joined Indy in 2005 ... appearing in 10 games in his career, winning it all alongside Peyton Manning and Co. at Super Bowl XLI.
He started a fitness company in retirement ... and also ventured into business.
A fundraiser was set up to support Ulrich's family following the athlete's sudden death ... with nearly $30,000 being raised over the past 18 hours.
Tom McMakin -- the CEO of Profitable Ideas Exchange, where Ulrich worked -- donated $20k for the cause. TMZ Sports spoke with McMakin ... and he said Ulrich had the biggest heart in Montana.
"Matt had love and energy for everyone he met," McMakin said ... adding Ulrich was heavily involved in the community by coaching his kids' football teams and providing speed and strength training for young athletes.
McMakin also praised Ulrich's brain and leadership -- assisting on multiple boards for causes throughout the area and raved about his success in the office.
"An NFL lineman is usually scary ... but Matt immediately put you at ease," McMakin said. "He was a gentle giant."
Tom also commended Ulrich for continuing to focus on his health following his playing days ... pointing out the athlete had lost 40 pounds in recent years and was in "peak condition."
As for why he decided to make the substantial donation, McMakin said, "He helped build our company and he was the heart and soul to the business. It's the least we could do."