Remember.. CSing is the most important thing if you want a high mastery grade
I went Jinx ADC, game lasted about 25 minutes
I ended with 23/1/9 with a team total of 39 kills
35,000+ damage done while the rest of the people in the game were below 15,000
I alone had a 6,000-10,000 gold lead in the game
4 turrets and 2 inhibs for objectives
I can see my ward placing was meh with only 8 placed
My CS was also pretty meh with 133
I didn't expect CSing to hit the rating that hard