After Saturday's game, in which he made two great catches, Harris had an MRI on the knee, which revealed inflammation. The Nationals hope he can play against the Cubs in Chicago on Monday.
Harris originally hurt the knee on April 10 against the Mets. In the ninth inning of that game, he made a great diving catch to end the game, securing a 4-3 victory for the Nats. It turned out that his spikes were caught on the ground when he made the catch. He didn't feel pain in the knee until the next morning.
Harris never complained and continued to play until manager Jim Riggleman decided to give Harris the day off on Sunday.