Mattingly said he's ready to insert Uribe back into the starting lineup, unless the player feels he needs an extra day off. Uribe's return will dislodge Elian Herrera from the hot corner for most games and require optioning back to the Minor Leagues either Alex Castellanos or Ivan De Jesus Jr., most likely Castellanos.
Uribe went 0-for-4 with two strikeouts and a sacrifice fly in the third and final game of his rehab assignment Sunday for Class A Rancho Cucamonga.
"Juan's pretty much the everyday guy," Mattingly said. "He's the best defender there, and when he's healthy he was swinging the bat good. I still think I'll go back to him. That's the plan."
Mattingly, however, said he will continue to utilize the surprising Herrera, both to spell Uribe at third and more in the outfield.
"He needs to be in the outfield more, taking fly balls again [before games]," Mattingly said. "Same with Jerry [Hairston], get him back in the mix in left field. Elian can come off the bench late in a game. When we get back into National League games, he can pinch-hit. He fits into that mix pretty good."
Mattingly said he likes what he's seen from Castellanos but implied he just needs more seasoning, especially after missing a month with a strained hamstring.
"He needs to keep playing," Mattingly said. "He hasn't been in the outfield much this year, they're trying to make him a second baseman. He's played fearless up here, aggressive. He still has work to do and at times his swing gets long and they throw the ball by him."