Washington manager Jim Riggleman declined to say who would start, because someone on the 25-man roster will be affected. The team has eight relievers so one of them will be taken off the roster. It will be a tough choice because all of the relievers are doing a good job.
As far as the starter goes, right-hander Craig Stammen and left-hander Matt Chico are candidates to get the assignment for the Nationals. Stammen has improved since he was optioned to Triple-A Syracuse in early June. In three starts, Stammen is 2-0 with a 2.25 ERA for the Chiefs.
Chico is having a respectable Minor League season, going a combined 4-5 with a 3.36 ERA for Double-A Harrisburg and Syracuse.
Left-hander John Lannan is not candidate and is expected to get another start in the Minor Leagues. The team wants Lannan to get his confidence back before he returns to the big leagues.