Letter Grades -_-
Alright so what actually determines your letter grade at the end of a game? I only ask because I played a really good game as Leona supp and would like to get her to mastery 6 but after all my team and I accomplished I was left with an A+.... So wtf? I was there for 4 towers, 2 dragons, and both inhibitors we took. I had 4 kills 4 deaths and 21 assists. Now a game where I did similar except I may have got a few extra kills with Karma gains me an S flat? I have a hard time understanding what determines this I don't even want the S for a chest I just want my mastery 6. I'm not one to say I deserve the S though I was really trying to get it I didn't intentionally KS I just want an explanation as to why I didn't get one... And before you ask... yes I warded I'm supp it's basically my job. Even warded near the enemies base cuz we had them so far pushed back and if they managed to push us I warded our jungle.
http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2254343887/232322531?tab=overview