Win/Loss ratio required for promotion

[Szei]

My first account took 60-70 wins with 7 or 8 losses to go from Gifted to ST, but that account started before the league redistribution in the early days of Outwitters (so it may not be indicative of how things are now). I had to go 8-0 against ST to get promoted on this account (my losses were all against Masters before I began facing ST players).

My second account took me 47 wins and 1 or 2 losses to go from Gifted to ST. I had to go 5-0 against 5 ST to get promoted (again my losses were against Master players before I faced STs).

5W 0L -> Gifted
1W 0L -> Master
41W ~2L -> ST

I'm playing a third account now. I let 8 games expire on it after my placement matches though so things will be different this time.

5W 0L -> Gifted
15W 8L -> Master (8 losses in a row came first and then the 15 win streak to get promoted)
31W 0L -> Still Master