New York was a winner in 2015—which is a statement of fact and not a quote from Donald Trump.

The city’s nine sports franchises in the four major professional leagues (NBA, NFL, NHL, and Major League Baseball) posted a combined winning percentage of .524 in the calendar year of 2015, according to Stats LLC. That’s pretty good, though not nearly as good as St. Louis, which earned the top spot in our table with a .622 average winning percentage last year. It was, however, a major improvement from 2014, when New York’s nine...