It is a good year to be a New York baseball team. As a slightly truncated April came to a close on Saturday, the Yankees had the best record in the American League at 15-6 and the Mets were tied with the Milwaukee Brewers for the best record in the National League at 15-7.

While not without precedent, the sight of both New York teams on top of their respective leagues at the end of April has been rare in the 61 seasons that the Mets and Yankees have coexisted. The last time it happened was 1986 — a year that turned out pretty well for the Mets. The only other time it occurred was 1976, when the Yankees closed April with a 10-3 record (eventually going on to lose the World Series) while the Mets were pacing the N.L. at 13-7 (they eventually failed to make the playoffs).

The restocked Mets have had phenomenal pitching this season — Friday’s no-hitter was a team effort in the truest sense — while the Yankees’ batters have mostly pounded their way to victory. But the Bombers closed April with an odd one, beating the Kansas City Royals, 3-0, on Saturday in a game in which the runs were scored on a double-play grounder and two sacrifice flies.

“When you want to be a complete team and a really good one, you have to find ways at times to win in different ways,” Yankees Manager Aaron Boone told reporters after the quirky victory.