The Grizzlies announced Tuesday that Jackson was injured when he landed awkwardly after making contact with an opponent while contesting a shot. Further evaluation found a meniscus tear in his left knee.
Jackson is expected to make a full recovery.
The Grizzlies, 0-3 in their seeding games, have a two-game lead over Portland and San Antonio for the No. 8 seed in the Western Conference.
Jackson, the No. 4 overall selection in the 2018 draft out of Michigan State, is second on the Grizzlies with 17.4 points per game. Jackson scored 33 points in the Grizzlies' opening loss to Portland in the seeding games.
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