Mac loves uncovering stories, but ever since the arrival of new student Roe Danner, there's one story he just can't figure out. The introverted tennis prodigy may make herself known on the court, but off the court, she's a total mystery. And before long, Roe's playing starts sparking rumors too. Even though she's right-handed, she plays with her left. And instead of sticking to the baseline, she charges the net. She even replaces her state-of-the-art graphite racket with an old wooden one. It's up to Mac to discover the truth behind Roe's odd antics. If he can do that, he might be able to stop the rumors and help bring Roe the fan support she needs. Stewart "Mac" McKenzie is THE sports expert at Coyote Canyon Middle School. While he scores big on the court with his wheelchair basketball team, his love for all sports is equally epic. There isn't a stat he doesn't know, a player's name he doesn't recognize, a big game he hasn't seen.