If you don’t have cable, it can be tough to follow any of the professional fighting sports. But Nashville fight fans who are just getting by with over-the-air digital TV have at least one reason to get pumped up — Tuff TV. I like to think of Tuff as kind of a poor man’s Spike TV. The channel features dude-centric films and original programs paired with plenty of extreme sports action, and while you won’t find UFC fights on Tuff, you will find the grounding, pounding blood rites of the Extreme Fighting Championship. The XFC is a Florida-based mixed martial arts fight-promoting outfit that premiered its first melee five years ago in a line-dancing bar in Tampa. It’s now a bigger up-and-comer that organizes fights featuring both men and women, and anyone who’s caught some of their battles on Tuff can tell you they bring talented strikers and grapplers to the cage. Tonight’s fights feature a main event between Eric Reynolds and Nick Newell that will crown the XFC’s lightweight champion. Reynolds is a tough, proven competitor who’s beaten a wide variety of fighters on his way to tonight’s bout. But anyone who saw Newell’s recent knee-to-the-head knockout of David Mays will want to think twice before making any hasty predictions about tonight’s big fight. The card also features a tangle between Nashville’s own Dustin West fighting Marcus Finch in a light heavyweight battle, and Stephanie Eggink versus Heather Clark in the women’s bout. I predict Eggink’s boxing background and jujitsu studies will carry her past Clark.