Registration is underway for the sixth annual Mary Korbey 3v3 Basketball Tournament, which will be held Sunday, March 17, from 8 a.m.-3 p.m. at Hopkinton High School and Hopkinton Middle School. There are male and female divisions for Grade 3 and up, including high school and adult/over-40 divisions. Proceeds benefit the Mary Korbey Scholarship Fund. For more details and to register, visit the Hopkinton Basketball Association website at hopkintonbasketball.org.