Nationals slugger Ryan Zimmerman, hoping to return before the end of the regular season, took on-field batting practice Tuesday for the first time since injuring his right hamstring. "I need to get back in shape hitting-wise," Zimmerman said before Washington's game against Atlanta. "I can't take as many swings as I normally do yet. I'm getting fatigued and sore the next day, so that's part of the progression. It's coming along. Everything has been positive and good so far. We're not there yet." Read more http://espn.go.com/mlb/story/_/id/1...hington-nationals-takes-full-batting-practice