Westbrook had a low ERA for most of the year, even though he walked more than he struck out.
Many of us said it (the ERA) couldn't continue.
It hasn't as his luck ran out.
Bailey has pitched as well or better as most pitchers in the league this year. His stats don't show it, but he's on the verge of being considered a dominate MLB pitcher.
He could conceivably be in the middle of a 18-6, 2.90 , 200 K season, if he had better luck. That Bailey for Profar trade would be realistic.