The Jeff Niemann move last night wasn't the only one the Rays appeared set to make. Though Niemann was pushed out to clear room for 1B Dan Johnson in the immediate, the team will also activate C Dioner Navarro following the conclusion of his rehab assignment tonight for Vero Beach. To make room for Navarro, it looks like C Mike DiFelice has lost out on the battle for the backup catcher's position to Shawn Riggans. Marc Topkin of the St. Petersburg Times reports that DiFelice was seen...
