"He looked pretty good," Reds manager Dusty Baker said. "He didn't look like he was babying or guarding anything. But he didn't really have to exert maximum effort. The ball wasn't running in on him, or [he wasn't] reaching for a breaking ball. Batting practice is pretty simple. We'll see."
Cozart's return remains uncertain, however.
"Whatever his body tells him," Baker said. "He's progressing. I can't give you a definitive answer. He's a big part of our offense and our defense."
Baker continued to tweak his lineup on Sunday. With Drew Stubbs struggling at the plate -- he remains hitless in his last four starts -- Chris Heisey earned the start in center field in the finale against the Marlins. He is 14-for-42 (.333) with three homers and eight RBIs in his past 12 appearances.
Dioner Navarro was Mat Latos' battery mate on Sunday, giving Ryan Hanigan a breather. Navarro singled as a pinch-hitter on Saturday. Didi Gregorius, who made his Major League debut Sept. 5, earned his third starting nod at short. Wilson Valdez had started seven of the last nine games with Cozart out.
"It seemed like we were going to get the lineup back the way I wanted it [when we got] Joey [Votto] back, and then I [lost Cozart]," Baker said. "Slide him to the second slot and Brandon [Phillips] leadoff. I really haven't been able to do what I've wanted to do the whole year. We're fortunate to be in our position."