Al Horford is averaging career highs in points and field goal percentage this season. (Mike Lawrie/Getty Images)
Atlanta Hawks forward Al Horford has a complete tear of his right pectoral muscle and will be out indefinitely, the team announced.
Horford was injured in last night's 127-125 double-overtime win over the Cleveland Cavaliers, leaving with a shoulder injury in the first overtime after trying to make a steal.
He suffered a torn left pectoral muscle in January 2012, but returned to the lineup almost four months later.
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Horford is averaging 18.6 points and 8.4 rebounds in 29 games for the Hawks this season. The Hawks are the only Eastern Conference team besides Miami and Indiana that have a record above .500.