In reading order
Ballpark Mysteries #1: The Fenway Foul-up
David A. Kelly
Ballpark Mysteries #2: The Pinstripe Ghost
David A. Kelly
Ballpark Mysteries #3: The L.A. Dodger
David A. Kelly
Ballpark Mysteries #4: The Astro Outlaw
David A. Kelly
Ballpark Mysteries #5: The All-Star Joker
David A. Kelly
Ballpark Mysteries Collection: Books 6-10
David A. Kelly
Ballpark Mysteries #6: The Wrigley Riddle
David A. Kelly
Ballpark Mysteries #7: The San Francisco Splash
David A. Kelly
Ballpark Mysteries #8: The Missing Marlin
David A. Kelly
Ballpark Mysteries #9: The Philly Fake
David A. Kelly
Ballpark Mysteries #10: The Rookie Blue Jay
David A. Kelly
Ballpark Mysteries #11: The Tiger Troubles
David A. Kelly
Ballpark Mysteries #12: The Rangers Rustlers
David A. Kelly
Ballpark Mysteries #13: The Capital Catch
David A. Kelly
Ballpark Mysteries #14: The Cardinals Caper
David A. Kelly
Ballpark Mysteries #15: The Baltimore Bandit
David A. Kelly
Ballpark Mysteries #16: The Colorado Curveball
David A. Kelly
Ballpark Mysteries #17: The Triple Play Twins
David A. Kelly
Ballpark Mysteries #18: The Atlanta Alibi
David A. Kelly
The Black Cat Change-Up
David A. Kelly
Willie's Clutch Catch
David A. Kelly
The Sausage Race Chase
David A. Kelly
Ballpark Mysteries, Book 23: The Bobblehead Bunt
David A. Kelly
The Rumble Monkey Mix-Up
David A. Kelly