"Originally scheduled to miss only four games with a sore right knee, Dallas Mavericks star forward Dirk Nowitzki could possibly be out longer, he said Thursday.

Nowitzki, who will miss his fourth game against the Utah Jazz on Friday, spoke to the media for the first time since being sidelined and said he's making progress. Nowitzki said a decision on his return will be made closer to game time before Sunday's matchup against the San Antonio Spurs."