For once this Charlotte Hornets season, the injury news out of practice Saturday was all positive. Backup center Cody Zeller, who has missed the last four games with a bruised right knee, plans to play Sunday at home against the Orlando Magic. The Hornets list Zeller as probable, after he fully participated in practice. Also, the Hornets list small forward Treveon Graham (right quad contusion) as questionable for the Magic game. Graham suited up for Friday’s loss to the Houston Rockets, but coach Steve Clifford said pregame he’d use Graham only in an emergency. Clifford said Saturday he anticipates Graham playing against the 4-1 Magic. While Zeller is a backup to Dwight Howard this season, he’s a key part of the rotation, particularly since the second unit was such a weakness for the Hornets last season. The Hornets were 3-17 last season in games Zeller missed.