The Boston Celtics will be without small forward Jaylen Brown on Wednesday when they host the Milwaukee Bucks.

Brown is dealing with an illness:

The Celtics are 2-1 on the young season, as are the Bucks.

Brown is averaging 17.3 points, 6.7 rebounds and 2.0 assists per game on the season. He's shooting 50.0 percent from the field, 28.6 percent from beyond the arc and 66.7 percent from the free-throw line.

With Brown out, the Celtics will need Kemba Walker, Jayson Tatum and Gordon Hayward to step their games up against the Bucks. Center Enes Kanter is out as well for Boston.

The Celtics signed Brown to a four-year, $115 million extension shortly before the rookie-scale extension deadline. Brown would have entered restricted free agency next summer if he and the Celtics didn’t agree to an extension. The contract situation could have been a distraction for Brown during the 2019-20 campaign, so it’s good he and Boston were able to get it done.

Last season for the Celtics, Brown put up 13.0 points, 4.2 rebounds and 1.4 assists while shooting 46.5 percent from the floor, 34.4 percent from the 3-point line and 65.8 percent from the charity stripe.

The Celtics lost to the Bucks in the second round of the 2019 playoffs. Milwaukee won in five games.