Thornton has had a quiet spring, posting a 2.45 ERA and 2:0 K:BB ratio in just 3.2 innings. There's been nothing wrong with Thornton, but the veteran lefty is simply saving his bullets for when the games start to count, He should be Drew Storen's primary left-handed setup man this season, and after racking up six holds in just 18 games for the Nats last season, he could be a sneaky source of value in that category in 2015.