The Umpire Cheat Sheet is built for umpires in Ontario (and soon further) to review their local league and tournament rules. These rulesets are a reminder app for users to remember on the go what rules they're about to umpire. Every league has very large variances between rules so this is a huge help! *** Currently available for *** Canada - Ontario -- Greater Hamilton Area *** Coming soon*** Greater Toronto Area Oshawa Orillia Barrie Dunnville More areas being added very soon! Use the form link in the app to submit more leagues and areas.