One year after the most memorable weekend of his basketball career, former Virginia star Kyle Guy is dealing with a family tragedy: His grandfather died Friday of the disease caused by the novel coronavirus.

Guy posted the news, along with images of his grandparents, to his Twitter page Saturday.

“Covid-19 took my grandpa last night,” he wrote. “Mortality is a tough pill to swallow. You used to live down the street, now you’re with us everyday. I beg you, don’t let this be your wake up call. Take this seriously & stay safe”

The death of Guy’s grandfather came on what would have been the eve of this year’s Final Four. Last season, Guy was selected the most outstanding player at the Final Four after the Cavaliers won the first national championship in program history.

Then a junior, Guy sparked the top-seeded Cavaliers with 24 points in the national championship game, an 85-77 overtime win against No. 3 seed Texas Tech in Minneapolis. He made 8 of 15 field goal attempts, including 4 of 9 from three-point range, and added three rebounds and a steal.

In the national semifinal against No. 5 seed Auburn, Guy had 15 points, including three free throws with sixth-tenths of a second left, as Virginia rallied for a 63-62 win. He also made a three-pointer with 7.4 seconds to play that cut Virginia’s deficit to one.

Several weeks later, Guy announced he was declaring for the NBA draft, where the New York Knicks selected him in the second round with the 55th pick and then traded him to the Sacramento Kings.

“When I was 7 or 8 my grandpa had me sign a piece of paper saying he’d be my manager (jokingly) if I ever made it to the NBA,” Guy wrote Saturday on Instagram. “Something as small as that was always on my mind while I tried to make that dream come true. I know he’s up there waiting for his cut … and one day, I’ll give it to him”

Guy, who spent much of this season with the Stockton Kings of the G League, played in two January games with Sacramento before the NBA suspended its season March 11.

In his Instagram post, Guy said of the pandemic, “I urge and beg you all to take this seriously.” As of Saturday evening, there have been more than 300,000 confirmed cases and 8,000 deaths in the United States.