Added to Roster
Jon has been added to the John Marshall 2019 baseball roster.Jon has been added to the John Marshall 2019 baseball roster.Apps
MaxPrepsFollow your favorite high school teams and players
MP Stats for iPadStat keeping for basketball teams
Pro Photography
Watch
Video CenterSee top plays & highlights of the best high school sports
Live Streams & ReplaysGet access to live game streams and full replays for 8000+ schools
Content Contributors
Tickets
Jon Devlin
- Jon has been added to the John Marshall 2019 baseball roster.
Jon Devlin's Bio
View Full Bio
Recent Baseball Games
John Marshall High School 
© 2026 MaxPreps, Inc.
MaxPreps is a registered trademark of MaxPreps, Inc.