How many wins do I need to get from Bronze 4 to Silver?
16 wins
With a 55% win rate, you need to play 160 games, win 88 of them and lose 72.
With a 60% win rate, you need to play 80 games, win 48 of them and lose 32.
With a 65% win rate, you need to play 53 games, win 34 of them and lose 19.
With a 70% win rate, you need to play 40 games, win 28 of them and lose 12.