PHOENIX — There is more concern for Tommy Joseph, a Phillies catching prospect, who suffered another head injury Friday at double-A Reading. Joseph was placed on the minor-league disabled list Saturday with a possible concussion.

Joseph "felt a little uncomfortable and foggy" after taking a foul tip to his head, Phillies general manager Ruben Amaro Jr. said. The 22-year-old catcher has a history of concussions and was limited to 36 games last season because of them.

The Phillies are not certain about the severity of this latest injury. Amaro reported Joseph felt better Saturday. Still, there are questions about his future at the position.

"Oh yeah," Amaro said. "Absolutely. We are worried about him."

Joseph started strong at Reading with four homers and a .861 OPS in 15 games. He was acquired from San Francisco in the Hunter Pence trade.

"It's a shame because he had been really swinging the bat well," Amaro said. "He was disappointed. We're disappointed. Hopefully it won't be a long-term thing. He already felt better. We'll see."

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