Charlotte Roller Girls (the whole big pictured gang of 'em) look so nice when they're smiling. It's almost hard to imagine them — their faces focused and serious during bouts — clobbering their opponents during a heated, action-packed jam. This weekend, you can see their game face during a double header at Grady Cole Center. Charlotte Roller Girls All-Stars take on the Low Country Highrollers All-Stars, while Charlotte Roller Girls B Dazzlers challenge the Low Country Highrollers Bruisin Betties. Show your support to get the girls smiling again. Scoring passes and grand slams should do the trick. For more information, visit www.charlotterollergirls.com. $10-$14. 6 p.m. Grady Cole Center, 310 N. Kings Drive. 704-353-0200.