Why is this person in my promo game?

Hi, I have recently trying to get out of bronze. I am actually in the pre-load right now for my final game to determine whether or not i go into silver or stay in bronze I. I usually look up my team mates to see their win rates and who they play. For some reason, I am being matched with a person with a 0% winrate who has fed in their past 3 games and is level 31. I dont understand why they are in my game?

Edit: I was suprised. It was my jungle and my mid that fed that game and we lost.