Since he joined the bullpen nearly three weeks ago, the right-hander has performed well.
The right-handed long reliever provides four-plus strong innings of relief and has allowed only two runs in his two outings for the Nationals.
The veteran right-hander will stay on as a long reliever -- and not just for this week.
One small move this winter has been, so far, a resounding and unheralded success: the signing of left-hander Abad.
The Nationals sign three starters to low-risk minor league deals, right-hander Ross Ohlendorf and left-handers Sean West and Brandon Mann.