Washington Nationals outfielder Bryce Harper started in left field and batted second Tuesday night as he began his minor league rehabilitation assignment with Class-A Potomac (Md.).
Harper, the National League rookie of the year last season, hasn't played for the Nationals since May 26 because of bursitis in his left knee. He was injured May 13 when he collided with the outfield wall in Dodger Stadium.
The Chicago Cubs designated former All-Star closer Carlos Marmol for assignment, and the team has 10 days to trade or release him or send him to the minors if he clears waivers. Marmol, 30, was 2-4 with two saves...