The team did not provide details to honor Bruce's privacy. Bruce is eligible to rejoin the team Friday in Miami.
Votto has a strained muscle above his left knee and is out indefinitely. Phillips is recovering from a torn ligament in his left thumb that is expected to sideline him until the end of August. Bruce is batting .215 with 10 homers and 42 RBIs.
The Reds called up reliever Curtis Partch for his fifth stint with Cincinnati.