x-post /r/LoL) Match History Analyzer Excel Spreadsheet : r/YasuoMains
LoL Mastery Chart: How to see your most-played champions
GitHub - ahmj/LeagueMastery: An application that analyzes a League of Legends players champion mastery and generates suggestions based on multiple factors. This allows players to choose champions that will maximize the possibility
Champion Mastery Challenge (comment for more Info) : r/leagueoflegends
Champion Mastery Guide – League of Legends Support