"Scott Olsen will likely start Thursday after throwing a bullpen session Tuesday evening with Class AAA Syracuse, according to a source. Olsen has been on the disabled list with shoulder stiffness and inflammation since May 23 and has made a handful of rehab starts in July.

Starting Olsen on Thursday will allow the Nationals to move back Craig Stammen and Ross Detwiler to pitch Friday and Saturday, likely in that order. Detwiler would receive an extra day of rest, which he could use after starting Sunday on three days rest."