how do I go 22-0-7 as eve mid and only get a S rating, WHERES THE S+?!
i dont understand riot, I've gotten s+ with her for less why not this time??? 
i dont understand riot, I've gotten s+ with her for less why not this time??? 
You probably had a CS or other score too low that it dragged it down. The grade is an average, not a total, so you could be 10000/0/0 but your score will get dragged down if you have a shitty CS etc.
ah, that would make sense, ahri wouldnt let me farm that much so i just roamed and killed the other lanes
Ya that's why you get a shit ton of Mastery points from simply winning the match and your grade only slightly affects it. Even with 0/5/0 and shit CS, you still might have been the guy that somehow secured the win. It's just kind of disheartening to have a grade lower than you expected.
upgrade trinket seems to be the only way
Once went 10 0 18 as adc kogmaw and only got an A+. Another game I went 11/2/8 as Draven and got an S+. The grading system is kinda weird like that, but its based on the average of games that other people play as that champion. If people consistently score well as a champion, you have to score even higher to get a good grade.
I only ever got S+ in a game where I screwed up and stole first blood from my ADC as support.
It works in mysterious ways.