If we're going by our new professional way of determining stuff like this based on results.. Then a player is considered top10 based on their wins and losses against other players that are also top10.
Which would probably be something like:
REO, Maxter, PerfectLegend, Pig, CD Jr. MIT, DJT, Dizzy, 16 Bit, Detroit (his stock might have dropped slightly, though).
Tyrant's stock is variable lately.. He was solidly in the top10, but he's been going through some stuff at the last couple of big tourneys. He is unquestionably in the 'extended top10', though.
(Also if we're honest, m2dave is coming for Detroit's spot.. If he gets one more top8 finish, he's undenialbly in the top10. And Sonic Fox is as talented as anyone else in that group; so if he keeps winning we can probably put him in the 'extended top10').
So the group of players 'at a top10 level' would be something like REO, Maxter, PL, Pig, Jr., MIT, DJT, Dizzy, Bit, Detroit, Tyrant, m2dave, and SonicFox.
If you have as many current wins as losses against that group of players, than you can be rightfully considered an 'extended top10' player. Otherwise, you should be considered outside of top10.
However, who the top10 players are, is a bit of a guess, until we start putting the actual results together.
Now allow me to sneak back out of this thread as fast as possible before Tom Brady blows me up.