In last week’s two-point road loss at Boston, Dosunmu became the first rookie in NBA history to tally 20 points with 10 assists while shooting 90 percent from the field. He did it while guarding Celtics stars Jayson Tatum and Jaylen Brown. It was only Dosunmu’s third career start. Two days later, Dosunmu had 15 points, 10 rebounds, six assists, four steals and two blocks in a head-to-head matchup against Grizzlies star Ja Morant. On Wednesday, the challenge was Cavs rising star Darius Garland: an 18-point, eight-assist, one-turnover performance for Dosunmu. “For a rookie coming in, not even halfway through a season, the game’s slowing down for him already, which is exciting to see,” Caruso said.