Phillies RHP Taijuan Walker (finger) placed on IL

(Photo credit: Eric Hartline-USA TODAY Sports)

Philadelphia Phillies right-hander Taijuan Walker was placed on the 15-day injured list Sunday because of inflammation to his right index finger.

The move was made retroactive to Saturday.

In a corresponding transaction, the Phillies recalled right-hander Michael Mercado from Triple-A Lehigh Valley.

This season, Walker has a 3-3 record with a 5.60 ERA with 43 strikeouts ov