College Football has been the most profitable sport for me over the last 25 years. Then college basketball was next. Have manged to grind out some plus in the baseball this year, and this year has been TUFF on most.
Some people that i know make money in the NBA but they choose their spots very very carefully. Even the good cappers there will tell you, they play 3 for show and 1 for the dough.
I used to partake in the NFL long ago, but i found out that it was Not for me.