A Florida high school's star basketball star was declared to be the tallest teenager in the world when his 7-foot, 5.33-inch height was verified by Guinness World Records. Olivier Rioux, 15, who hails from Beloeil, Quebec, and now attends IMG Academy in Bradenton, Fla., was named the tallest teenager living by Guinness World Records. "My mom is 6 foot 2 and my dad is 6 foot 8," Rioux told WFTS-TV ...