Roberto & Me, Paperback/Dan Gutman

What would you do if you knew there was going to be a terrible accident? When Stosh travels into the past to meet Roberto Clemente, a legendary ballplayer and a beloved humanitarian, he's got only one goal: warning Roberto not to get on the doomed plane that will end his life in a terrible crash. In the sixties, Stosh meets free-spirited Sunrise, and together they travel across the country to a ball game that leaves them breathless--and face-to-face with Roberto. But when the time comes for Stosh to return to the future, he finds that the adventure has only just begun. . . .