Nationals trade RHP Rodriguez to Cubs
Rodriguez was 0-1 with a 4.00 ERA in 17 games for the Nationals before being designated for assignment June 4. He was 1-3 with a 5.83 ERA and nine saves in 35 games for Washington in 2012. He finished with a 4.23 ERA in two seasons for the Nationals.
Dickson, a 35th-round pick of the Cubs in 2011, is 2-2 with a 6.88 ERA in 11 games - three starts - for Class A Kane County this season. In two years of Class A ball, he is 5-5 with a 6.06 ERA in 26 appearances, including 18 starts.