Maine Roller Derby’s Calamity Janes will host the Petticoat Punishers at 6 p.m. Saturday at the Portland Expo. Advance tickets are $10 each or $35 for four. Admission is $13 at the door, $5 for kids 6 to 12 and free for those 5 and under. Tickets are available at Bull Moose or through www.mainerollerderby.com.

Steve Grant, who played for the Indianapolis Colts from 1992-97, will be speaking at Messiah Christian Church at 5 p.m. May 19. For more information call 985-9287.

Laxpros will hold two free lacrosse clinics for boys and girls in grades 3 to 12 from 4 to 5:30 p.m. May 23 at Falmouth High School. Former Boston Cannons goalie Kevin O’Brien will lead a goalie clinic, and current Boston Cannons and Boston Blazers defenseman Jack Reid will lead a defensive players clinic. Registration is required. E-mail [email protected] to sign up.