David A. Kelly

Red Sox versus Cubs. Game five. It looks like Mike and Kate are about to watch the Cubs win it all. But then someone starts messing with the team....

The MVP club wants to save an old field house close to their school. They could turn it into their very own sports center! Luckily, a famous soccer star is coming to town and wants to help....

Five friends are ready for their school's Olympics field day. There will be relay races, archery contests, and more! But not everyone wants to play fair - someone is trying to ruin the events....

Mike and Kate can't wait to watch their rookie hero, Dusty Martin, in action. But something is throwing the Blue Jays' star off his game....

Ivy-covered walls--they're the most famous part of the Chicago Cubs' historic ballpark, Wrigley Field. Mike and Kate can't wait to get down on the field to see the ivy for themselves....

This collection includes: Ballpark Mysteries #6: The Wrigley Riddle: Ivy-covered walls--they're the most famous part of the Chicago Cubs' historic ballpark, Wrigley Field....

Splash! A hit soars over the walls of the San Francisco ballpark on the bay and drops into the water. But then Mike and Kate hear another, much larger splash nearby....

Mike and Kate are in Miami visiting Kate's Uncle Oliver - and the Miami Marlins ballpark, of course! Uncle Oliver is in charge of keeping the new fish tanks at the ballpark fully stocked....

What better city to spend the Fourth of July than Philadelphia? For Mike and Kate, the holiday is all about hot dogs, history, and baseball....

Mike Walsh and Kate Hopkins are super-lucky. They have tickets to the Boston Red Sox game and all-access passes to Fenway Park....