Tommy Greenwald is the author of Game Changer, Rivals, and Dinged. Game Changer is on 18 state lists, was an Amazon Best Book of the Month, a YALSA Top Ten pick, and a Junior Library Guild Premier selection. Rivals was also an Amazon Best Book of the Month, a Junior Library Guild selection, and a YALSA Quick Pick for Reluctant Young Adult Readers. Greenwald is also the author of the Crimebiters! and Charlie Joe Jackson series, among many other books for children. Day job-wise, Tommy is the cofounder of Spotco Advertising, a theatrical and entertainment advertising agency in New York City, and the lyricist and co-book writer (with Andrew Lippa) of John & Jen, an off-Broadway musical that has been produced around the country and internationally.