How many wins do I need to get from Bronze 1 to Diamond?
72 wins
With a 55% win rate, you need to play 720 games, win 396 of them and lose 324.
With a 60% win rate, you need to play 360 games, win 216 of them and lose 144.
With a 65% win rate, you need to play 240 games, win 156 of them and lose 84.
With a 70% win rate, you need to play 180 games, win 126 of them and lose 54.