Pitching Grips

As the calendar turns to June, the playoff picture is tight in both leagues. There are 11 teams in the NL with records over .500, which should make for an exciting Wild Card race this summer. The AL is nearly as competitive, though for the opposite reason, as more than half of the clubs in the junior circuit have losing records. Our power rankings use a modified Elo rating system. If you’re familiar with chess rankings, you’ll know that Elo is an elegant ranking format that measures teams’ relative strength and is very reactive to recent performance. To avoid overweighting recent results during the season, we weigh each team’s raw Elo rank using our coin flip playoff odds. (Specifically, we regress the playoff odds by 50% and weigh those against the raw Elo ranking, increasing in weight as the season progresses to a maximum of 25%.) The weighted Elo ranks are then displayed as “Power Score” in the tables below. As the best and worst teams sort themselves out between now and October, ...