After two seasons at San Jose State and one season at Gonzaga, Clarke was selected by the Grizzlies with the 21st overall pick in the 2019 NBA Draft. In his NBA debut against the Heat on Oct. 23, Clarke accumulated eight points (3-6 FG, 1-1 3Pt, 1-1 FT), seven rebounds, one assist and one block in 23 minutes. He had his first double-digit scoring outing during the following game, posting 14 points (7-9 FG, 0-1 3pt) in 25 minutes against the Bulls. During the fifth game of the season, Clarke posted his season-high 11 rebounds -- a feat he achieved five times -- against the Suns. That contest was also his first of three double-doubles, with Clarke scoring 16 points (7-9 FG, 1-1 3Pt, 1-2 FT) in that matchup as well, not to mention a season-high three steals. The rookie recorded his first of four 20-point games Dec. 14 in a 17-point win over the Wizards, accumulating 25 points (11-14 FG, 1-1 3Pt, 2-2 FT) in 24 minutes. The 6-foot-8 big man scored a season-high 27 points on two occasions -- first on Dec. 18 against the Thunder and second on Feb. 12 against the Trail Blazers. Overall, Clarke averaged 12.1 points, 5.9 rebounds and 1.4 assists in 22.4 minutes. Arguably his best stretch of the season was seven games from Nov. 15 through Nov. 29, where Clarke averaged 13.4 points -- 69.5 FG%, 57.1 3Pt%, 72.7 FT% -- 5.7 rebounds, 1.6 assists and 1.0 combined steals-plus-blocks in 21.5 minutes, scoring in double-digits in all but one contest. In terms of the NBA ranks, Clarke finished fourth in true-shooting percentage (66.3) and sixth in offensive rating (127.0). In September, Clarke was named to the First Team All-Rookie squad with teammate Ja Morant.
June 20, 2019Drafted by the Oklahoma City Thunder in the 1st round (21st pick) of the 2019 NBA Draft.
July 6, 2019Traded by the Oklahoma City Thunder to the Memphis Grizzlies for Darius Bazley and a 2024 2nd round draft pick.
July 7, 2019Signed a rookie two-year contract with the Memphis Grizzlies