Yankees closer Aroldis Chapman on Saturday shared an Instagram video of himself tossing pitches partially unclad, and it seems his massive muscles only continue to grow during baseball’s coronavirus shutdown.

“Bullpen day,” the 32-year-old pitcher wrote alongside the social-media post.

Long regarded as one of baseball’s best athletes, the 6-foot-4, 212-pound Chapman went viral in March when an Instagram photo showed the muscles on his left pitching arm looking bigger than a beachball.

Chapman has shared various clips of himself working out over the past couple of months, with baseball on hiatus because of the pandemic.

It remains unclear when Chapman, whose fastball was once clocked an MLB-fastest 105.1 mph, will be able to train with the Yankees again, as MLB continues to work out a plan to begin the 2020 season, possibly in July.

Before baseball was shut down on March 12, Syndergaard, one of the Mets’ top hurlers, drew laughs from teammates and fans after showing off his robust upper body during spring training.