Eflin (0-2) gave up two runs on four hits and a walk over 5.2 innings Sunday, striking out three, in a loss to the Diamondbacks.
While it's a much better line than he managed in his major league debut against the Blue Jays earlier in the week, the end result was still the same. Eflin threw 55 of 88 pitches for strikes but only managed seven swinging strikes as he continues to have trouble fooling big league hitters. He'll next take the mound Friday in San Francisco.