I just got an A-

Okay, let me tell you my stats.

First of all, the game was a stomp in the enemy team favour.

game time: 35:22

4/1/5 KDA 52.9% Kill part.(a little low.) 12.4k gold (2nd best in team, equal to second worst enemy team) 250 CS (1st above all players, it was still low considering game time, but i didnt have where to farm from) 54 seconds spent dead (least above all palyers) 16 champion level (enemy team was only 17) 0 turrets and inhibs (I think we only got 1 all game) 28.3k damage delt to champions (highest in game. Again, we got stomped and they had a fed draven) 13 trinket wards placed 3 pink ward placed (both low)

Got a triple kill (I dont know if that sums)

I dont know if there are more relevant factors, i'll link the game here: http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2146778828/201795121?tab=overview

I just cant explain why only A-