Philly's roller derby team is fierce, and back on the track

How it works: Two teams, each with five players, basically try to score the most points.

• "Jammers" (the offense) look to elude "blockers" (the defense) on the track.
• Once a "lead jammer" is established, that person scores points by lapping defenders. Every lapped competitor equals one point.

The intrigue: Injuries are how they roll, says Kara Rivers. She got a concussion and broke her fibula and was sidelined for weeks — then right back out on the rink once her doctor cleared her.

• "It’s an addicting sport. You hear a lot of people say roller derby saved their soul," says Rivers, a caterer by day who competes as Whiskey ChaseHer. "Getting to hit people is the cherry on top of that."

Whiskey ChaseHer? Yes, and Russian Bayou, Stef Leopard, Dread Velvet — the funnest part are the alter-roller egos.

• Fun fact: Rivers, a Wisconsin transplant who moved to Philly two years ago, met her wife through roller derby.

Zoom out: Philly's team saw its numbers dwindle during the pandemic. But the squad is now nearly at full strength — and ranked ninth among nearly 500 teams in its international traveling league.

If you go: Doors open at 11am at the Northeast Racquet Club & Fitness Center. First whistle at noon. Tickets: $15 online, $20 at the door. Children 12 and under get in free.