Awful news to pass along in the world of college sports. George Mason pitcher Sang Ho Baek tragically passed away due to complications from Tommy John surgery, the school announced.

“We are devastated by the passing of Sang,” George Mason baseball head coach Bill Brown said in a release. “Sang was an incredible teammate who was loved by everyone associated with Mason baseball. He will be missed and forever cherished in our hearts. Right now, our thoughts are with Sang’s family at this unbearably difficult time.”

“After being informed by his family about Sang’s passing, we are heartbroken and extend our deepest condolences to his family and friends,” George Mason Assistant Vice President/Director of Athletic Brad Edwards said. “Sang embodied everything you would want from a student-athlete. He was an excellent student, dedicated teammate and friend to so many. We are committed to providing support and resources to Sang’s teammates and all those in the Mason family who loved him.”

Baek reportedly suffered a blood clot after the surgery. He was 20 years old.