Are you saying 1% of total players? Over all brackets smurf? Thus making it 1% of 5%? Would make your end number 1/1100.
For actual numbers: Competitive Mode Tier Distribution
I’ll go ahead and update my math here, and in the original reply.
10% of players are in Diamond, 3% are in masters.
If every person in Masters smurfs, then that’s 1.3x more players in the possible pool. 30 / 130 = 0.23, or 23% of the player pool.
If 1% of Masters smurfs into Diamond, than that’s 23% * .01 or .23% of the player pool being smurfs.
We know it’s not 100% of Masters, since Masters games are played.
Where is it on the spectrum? I bet Tigole Bitties knows.