Z has to catch Webb before he can pull away from him. Webb is doing his part to help that happen tonight. Webb's ERA is now 2.64. And his RA is 2.98 as well now and Z's is 3.46. That's still a decent gap but not as big as the ERA gap, and IMO RA is a better factor of how much a pitcher helps his team than ERA. The difference in WHIP is now down to 0.10. Webb may still have a lead, but Z is coming on fast. Why is RA a better factor? It's not the pitcher's fault if he gives up unearned runs. Obviously unearned runs are going to affect the outcome of the game but this award is for who is the best pitcher for the year and statistics that a pitcher can't control (re: wins, unearned runs) shouldn't affect who wins the award. Don't forget about Chris Carpenter as well, who I also have in front of Z at this point.