Time machine magazine

"Rachel Young is fast on the track, but fitting in at her new school is a slow process. She's so desperate to make friends with her teammates that she turns her back on her cousin Nate. Despite being at odds, the two cousins are transported to the 1988 Olympics by an old Sports Illustrated magazine. There, they cheer on the stylish speedster Florence Griffith-Joyner in her sprint for gold. Will Flo-Jo's inspiring attitude from the past help Rachel fix things in the future?"--Back cover.

After a fall during her balance beam routine thirteen-year-old Rachel and her cousin use the magical Sports Illustrated magazines in their grandfather's collection to travel back to the 1976 Olympics to observe Nadia Com?neci's perfect routines--and incidentally meet their grandfather who is covering the Olympics as a sports reporter.