The Nats currently have what may well be the best rotation in the entire Major Leagues. Nobody is going to rank them any worst than 3rd or 4th in MLB, and even that might be considered low by everyone. However, if there is one knock on the group, it’s the lack of depth. They have 3 studs in Strasburg, Gio and JZimm, but there are questions after that.
It would be great if Detwiler is as good in 2013 as he was in 2012, but in reality all he has to do is be good enough to be a #4 or #5 guy and start most of the year. We don’t really know if he can do that, although I suspect he will be that and more. As for Haren, that move is exciting for the potential to have a top flight guy at the bottom of the rotation. But it is also a little scary due to injury history and a poor 2012.
Regardless of the health of the rotation in general, and even if Haren starts 30 games, it is highly unlikely that they will only use 5 starters the whole year. John Lannan was their first backup plan, but now that he’s gone, who do they have?
The first choice might be Zack Duke, who started 26 games in AAA last year and has been a starter all of his career. Unless he ends up being their only reliable lefty relief man, in which case he’s going to be needed elsewhere. Christian Garcia is another option – a converted reliever who was successful in a limited 2012, but hasn’t recorded a start in 2 seasons. Of course, there’s Yunkesy Maya, who had a decent 2012 in AAA, but was nothing special there. Almost all of his MLB appearances have been pretty rough. Jeff Mandel started some games and did well in AAA, so could get a shot as well. That’s about all I see from the obvious choices. Another route would be to go after a free agent.