We've come up with a few metrics to measure sports pain. One is the combined number of seasons since a city's last championship, across the four major sports. Cleveland is now up to an incredible 147 title-less seasons since the Browns' 1964 N.F.L. championship. Another measure is the percentage of seasons over the last 50 years that have ended with a title. For reference, 10 percent of Boston's team seasons since 1965 have ended with a title. Most of the 13 cities on this list here don't clear 2 percent. We also tell you how many close calls — which we define as unsuccessful appearances in a sport's final four — a city has had. Sorry, Philadelphia.