won two championships - Dallas Stars - 1999 and Dallas Mavericks in 2011. That timeframe spans a total of 27 years or a combined 108 seasons including this season with the Rangers.
The Cowboys have never been to another Super Bowl. The Mavericks were only in the one other NBA Finals that they lost. The Rangers lost 2 World Series in that time and the Stars lost two other Stanley Cups in that time. So, a combined 7 championship appearances in 108 seasons with 2 wins.
That's pathetic for the #5 TV market in the country who are sports fanatics.