From SABR member John Dewan at ACTA Sports on June 29, 2015:
In the 2015 Bill James Handbook, Bill James introduced his new formula to determine the World’s Best Pitcher at any given time. The system is based on Game Scores and weighs positive and negative recent performances more heavily than older performances. As of the publication of the Handbook, Clayton Kershaw was the No. 1 pitcher in baseball by a substantial margin, and even in the Stat of the Week update from November that reflected Madison Bumgarner’s dominant playoff performance, Kershaw was still well clear of the field.
So far in 2015, Kershaw has been a little less dominant than his usual self. That combined with some excellent pitching performances from some of his peers, one in particular, has radically closed the gap.
Read the full article here: http://www.statoftheweek.com
Originally published: July 3, 2015. Last Updated: July 3, 2015.