Gonzalez, who turns 27 on Sept. 23, will remain a great mystery until next spring. The Phillies have him working with players in the Florida Instructional League this fall, but Proefrock said he was unsure whether Gonzalez will actually pitch in a game.
So much is unknown about the righthanded pitcher. His agent, Jaime Torres, arranged for games in Mexico when Gonzalez defected from Cuba so scouts could see him. He was suspended from pitching in Cuban baseball leagues for two years before that, and his experience is limited.
The Phillies have Cole Hamels and Cliff Lee atop their rotation, but questions about the rest persist. When Ruben Amaro Jr. signed Gonzalez, he spoke as if the rookie would secure a spot in his rotation. He will be asked to do that with few innings under his belt.
"The main thing is to get him in a situation where it's controlled," Proefrock said. "We'll see how it plays out. We don't know exactly what he's been doing."
Gonzalez's three-year contract starts in 2014. He will not be paid a salary until next April, but received a signing bonus in August. Proefrock said Gonzalez is healthy. Concerns about his elbow lowered the guaranteed years and money he received.
"Spring training is long enough where you can build him up and do what you need to do," Proefrock said. "I don't think there is any need to have him in a competitive situation before spring training. There is nothing set in concrete."
Domonic Brown (right Achilles soreness) could start in Sunday's series finale with the Nationals. He pinch-hit Friday for his first action in 12 days and hit into a game-ending double play. He entered Saturday's game in the seventh and struck out swinging in the eighth. Interim manager Ryne Sandberg said there is a "possibility" Brown returns Sunday. . . . Sandberg said reliever Luis Garcia was unavailable Saturday after being struck on his left foot by a liner.