Honus and Me by Dan Gutman
When young Joe Stoshack finds the most valuable baseball card in the world, a Honus Wagner T-206, in a pile of garbage, he thinks he's struck it rich. It turns out the card is worth more than money. It's his ticket to a time-travel adventure to a historic world series game, with one of the greatest baseball players who ever lived.
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Rivals by Tim Green
Twelve-year-old Josh looks forward to facing a true rival in the Baseball Hall of Fame tournament, but first he and his friends Jaden and Benji put themselves at great risk trying to expose the truth about a conspiracy to bribe the head umpire.
The Prince of Fenway Park by Julianna Baggott
Twelve-year-old Oscar Egg is sent to live with his father in a strange netherworld under Boston's Fenway Park, where he joins the fairies, pooka, banshee, and other beings that are trapped there, waiting for someone to break the eighty-six-year-old curse that has prevented the Boston Red Sox from winning a World Series.
Fenway Fever by John H. Ritter
Twelve-year-old Alfredo "Stats" Pagano and Boston Red Sox pitcher Billee Orbitt work together to break a potential curse at Fenway Park.