Parker, who underwent an MRI on Monday morning, did not accompany the Bucks for their three-game road trip this week.
After the Bucks selected him with the second pick of the 2014 draft, Parker played in just 25 games last season before sustaining an ACL injury that required surgery and forced him to miss the remainder of the season. Parker averaged 12.3 points, 5.5 rebounds and 1.7 assists, and was named the Eastern Conference Rookie of the Month for October/November before the injury.
Parker returned to the floor for Milwaukee on Nov. 4, after missing the entire preseason and first four games of the 2015–16 season. In five games this year, Parker has averaged 7.2 points and 3.6 rebounds in 22.4 minutes per game.
The Bucks (5–5) next play on Tuesday at the Washington Wizards (4–4).
- Kayla Lombardo