Cooper Flagg Listed Out with Left Ankle Sprain
Cooper Flagg is out with a left ankle sprain — timing matters here, because this is May, and the Mavericks are in the playoffs. The grade on this sprain is not confirmed by imaging or team disclosure; it's inferred from the "Out" designation, which in a playoff context carries more clinical weight than the same designation would in January.
The lateral ankle sprain is the most common injury in the NBA by raw count, and most individual episodes are genuinely minor — Grade 1 presentations often resolve in one to two weeks. The concern with Cooper Flagg, however, is the context: playoff basketball creates enormous pressure to return, and players routinely accept clinical risk in May that they wouldn't in the regular season. That's a double-edged reality here — if this is a Grade 1 sprain, Flagg could return quickly. If it's a Grade 2, the ligamentous disruption requires real tissue healing time even under elite care, with a published range of two to four weeks for isolated ATFL involvement.
What makes ankle sprains worth watching carefully at this level is recurrence. The NBA's literature is unambiguous: lateral ankle sprains carry the highest recurrence rate of any injury in the league. Each re-sprain compounds the instability risk. Whether Flagg has any prior ankle history would sharpen this assessment, but that information isn't available publicly.
The "Out" designation in playoff May is notable. Under standard OTM rules, once it's May, "Questionable" is effectively "Probable" — players compete through a lot in the postseason. A flat "Out" designation signals that either the sprain has enough structural involvement to preclude safe competition, or there's an abundance of caution being exercised early in the injury's presentation. No in-game event or specific mechanism has been publicly confirmed, which limits confidence in the grade inference. Watch for imaging results or any updated designation — that's the information that will sharpen this picture significantly.