Yahoo Fantasy Basketball is inconsistent with your INJ tag rules.
INJ - For players who are projected to miss or have already missed 7+ days or 3 games due to injury, whichever occurs first. If a player is injured mid-game, the day or game in which the injury occurs counts as the first day or game of the injury period.
DEREK LIVELY III has missed 3 games(1/14, 1/15, 1/17) due to injury.
Why haven't you given him an Injury Tag YAHOO?!
ESPN app has already Injury Tagged him.

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Sherman Hawkins commented
Why are you all consistently behind with this issue? Makes it hard to enjoy playing your fantasy basketball league.