This family-friendly pickleball field day features a learn-to-play session, open play, and a “Challenge Court,” with celebrity guests, including former U-M football players. Also, volleyball, bag toss, bocce ball, and other activities. Food concessions. All proceeds help provide lodging for out-of-town families whose children are being treated at area hospitals. 10 a.m.–1 p.m., Wolverine Pickleball, 235 Metty (off Jackson). Tickets $75 (ages 20 & under, $40) in advance only at rmhcannarbor.org/rally. (734) 552–4692.