Clint Capela will miss one to two weeks after an MRI on Thursday revealed the Atlanta Hawks center had suffered a strained right calf in Wednesday's loss to the Orlando Magic.

Capela, 28, is currently third in the NBA for rebounds per game (12.0), and his 63.3 per cent field goal percentage is the seventh-highest mark in the league.

His injury adds to a troubling list for the Hawks, who have been without starting forward John Collins for the past seven games as he deals with an ankle injury, while starting guard Dejounte Murray has missed a week of action with his own ankle injury.

Franchise centerpiece Trae Young was also absent for Monday's loss against the Memphis Grizzlies due to lower-back tightness, but returned to the lineup for Wednesday's loss.

With Capela and Collins still out, it will be a real opportunity for former top-10 draft pick Onyeka Okongwu to play starter's minutes.

Okongwu, 22, is averaging 21 minutes per game and has only made three starts from his 28 appearances this season, but he boasts per-36 minute figures of 14.0 points, 11.1 rebounds and 1.2 blocks.