When you enter a ranked game, you are matched with teammates and opponents based on your matchmaking rating (what used to be called Elo). It is expected that your matchmaking rating is about equal to other players in your League. If for some reason your matchmaking rating is below what is expected in your League, you will see League Point gains come much more slowly as you approach your Division 1 Series. If your matchmaking rating is especially low, it is possible to earn zero League Points for a victory as well as lose more League Points from a loss than is gained from a win.
They have designed the system to ensure that a player’s matchmaking rating is high enough to make certain that you can consistently play at the level of the next tier. As long as you continue to win more than you lose, your League Point gain will even out and you’ll reach the Promotion Series.