Asher has not found the big leagues to be easy in his first four starts since being promoted Aug. 30. He has not pitched more than 5 2/3 innings or allowed fewer than four runs in any start.
This will be Cosart's fourth start since returning from vertigo in early September. He's been solid in the first three -- allowing three earned runs in 15 2/3 innings -- and is coming off a win in Washington on Thursday (six innings, two runs).