Remember last August when Gary Sanchez hit a ton of home runs and put up a .442 isolated-power figure for the New York Yankees? It was amazing. It was also special, so far as exhibitions of power are concerned. Consider: only four batters produced a higher single-month ISO last year than Sanchez. It wasn’t just improbable for a rookie; it was improbable for a major leaguer.
But the improbable is different than the impossible. Now another power-hitting Yankees prospect, Aaron Judge, has just finished his first real month as a starting outfielder in New York and has recorded a .447 ISO in the process — or slightly higher than Sanchez’s mark. The power is as large as Judge himself.
And while Judge has been the most impressive hitter for the Yankees, the club has received quite a few pleasant surprises. Starlin Castro, Chase Headley, Aaron Hicks, Matt Holliday, Austin Romine, and Ronald Torreyes have all exceeded expectations.
The result? A very successful first month of the season, leading to a 15-8 record. And while some of the club’s surprising performances won’t last — Judge included — the Yankees have banked some wins, increased their projections, and significantly improved their playoff odds, as the chart below shows.

The Yankees entered the 2017 season with playoff odds of 15.9%, the worst of any team in the AL East. Their strong April has put them over the 50% mark the rest of the way, however. At the start of the season, the Yankees were projected to have a .488 win percentage. Going forward, that number is already up to .509. Add in the wins they’ve already received, and their projected end-of-season winning percentage is up to .529.
Largely responsible for that positive trend is Judge himself. As with the club itself, his own personal projections now appear more optimistic.
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