Nana is bats about baseball.  Once the baseball season begins, it is almost impossible to talk to her about anything else; but Ryder tries anyway.  As Nana settles down to watch a Jays game, Ryder asks, "do you think I should be an ornithologist when I grow up?  I could be like Grandpa Winger and study birds."  Nana doesn't seem to hear.  "The Jays play the Orioles today," she says as she nestles into a chair with Ryder perched at her side.  Ryder giggles at Nana's witty puns.  He'll trick her next time.  Soon a hilarious linguistic battle ensues with Nana catching every one of Ryder's "curve balls."  Saucy cartoon-like watercolours complement the humorous word play, making this book a winner from beginning to end.