Clarke appeared in 59 games for the Grizzlies during the 2020-21 regular season and started 16 times. The second-year big man made 13 starts in a row in a span between January 1 and February 4, a stretch in which he averaged 14.3 points and 6.1 rebounds across 29.4 minutes per game, but he came off the bench through most of the rest of the campaign. The former Gonzaga standout delivered his best game of the season in that particular span, as he posted 21 points, eight rebounds, five assists, two blocks and a steal across 33 minutes against the Brooklyn Nets on January 8. That was one of Clarke's two games with at least 20 points. He recorded a season-high 12 rebounds twice, including a 16-point, 12-rebound double-double against the Houston Rockets on February 28. Other season-high marks for Clarke included five assists (twice), four steals, and five blocks. He recorded at least three blocks in five different games, and he pulled down at least seven boards in 19 different games. He also recorded three double-doubles. Clarke finished his second year in The Association averaging 10.3 points, 5.6 rebounds, 1.6 assists, 1.0 steals and 0.9 blocks per game, setting up new career-best figures in each of the last three aforementioned categories, and he logged 24.0 minutes per tilt. Clarke also shot 51.7 percent from the field, 26.0 percent from three-point range, and 69.0 percent from the free throw line. He only appeared in two postseason games for Memphis, averaging 1.0 points across 5.0 minutes per game off the bench.2019
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 in the following game when he posted 14 points (7-9 FG, 0-1 3pt) in 25 minutes against the Bulls. During the fifth game of the season, Clarke delivered a season-high 11 rebounds -- a feat he later achieved four more 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 of 2020, Clarke was named to the First Team All-Rookie squad with teammate Ja Morant.