CLEVELAND (AP) — Cavaliers star guard Donovan Mitchell missed Game 4 against the Boston Celtics on Monday with a left calf injury, a devastating loss that will make it even tougher for Cleveland to get back in the series.

Mitchell, who has been dealing with a left knee injury for months, got hurt in the closing minutes of Cleveland’s loss on Saturday in Game 3.

The five-time All-Star is averaging 29.6 points in his second postseason with Cleveland. He scored 33 on Saturday in the Cavs’ 106-93 loss as the Celtics took a 2-1 lead in the Eastern Conference semifinal.

The Cavs were also without starting center Jarrett Allen, who missed his seventh straight game with a rib injury. Allen hasn’t been able to play since getting hurt in Cleveland’s first-round series against the Orlando Magic.

Allen had been dominant before getting hurt, averaging 17.0 points and 13.8 rebounds. He grabbed 20 rebounds in Cleveland’s Game 2 win over the Magic.