Waimea Athletics will host “Super Sunday Slam” clinics with visiting University of Hawaii-Hilo Vulcans from 10 a.m. to 2 p.m., Sunday, April 20, at Waimea Park, for ages 8-14. Field A: men’s baseball coach/mentor for youth; Field C: women’s softball team coaches/mentors for girls. Mahalo UH-Hilo and County of Hawaii Parks and Recreation. Cost is $20. Registration before April 11 includes clinic T-shirt, photo and lunch; also registration on the day of the event but no shirt. For more information, contact Melissa Samura at 887-3014 or email firstname.lastname@example.org.