Washington Nationals starting pitcher Ross Detwiler tossed 5 1/3 innings Tuesday night in the Nats' 3-2 win over the Chicago Cubs, allowing two runs on four hits. (AP Photo/Carolyn Kaster)

Photo by: Carolyn Kaster

Washington Nationals starting pitcher Ross Detwiler tossed 5 1/3 innings Tuesday night in the Nats' 3-2 win over the Chicago Cubs, allowing two runs on four hits. (AP Photo/Carolyn Kaster)