The Boston Celtics are listing small forward Jaylen Brown as doubtful and center Al Horford as probable for Wednesday's game against the Miami Heat in South Beach.

Brown is dealing with lower back spasms and didn't play on Monday versus the Heat in Boston. Horford has left knee soreness but will most likely play. He played 34 minutes against the Heat on Monday and recorded a triple-double in the Celtics' 110-105 win.

The Celtics are 46-32 on the season, which is good for fourth place in the Eastern Conference standings.

In 65 games this season for Boston, Al Horford is averaging 13.5 points, 6.8 rebounds and 4.2 assists. The five-time All-Star is shooting 53.1 percent from the field, 35.4 percent from beyond the arc and 82.4 percent from the free-throw line.

Horford has 10 double-doubles on the season. The Celtics are 39-26 when he's in the lineup.

Jaylen Brown, meanwhile, is putting up 13.0 points, 4.3 rebounds and 1.3 assists this season. The swingman is shooting 46.3 percent overall, 34.2 percent from the 3-point line and 66.3 percent from the charity stripe.

Brown has appeared in 72 games this season for the Celtics, who are 40-32 when the 22-year-old Georgia native is in the lineup.

Boston has four games left in the regular season. After the Heat game, the Celtics finish the season by playing the Indiana Pacers, Orlando Magic and Washington Wizards.