99 in the sb against big stack

[Elaboration]

Pokerstars 33+3R to the WSOP.

Third hand after a table change. No read except that villan just won a big pot right as I was moved to the table.

Hero in the CO with black 99 and t22,000
Villan in MP3 with t85,000

Blinds are 1000/2000 with an ante.

All fold to villian in MP3 who min raises to 4k. Folded to hero who...?

Push, call, Stop n Go, fold...

There were 43 left out of about 405. Top ten get some dough with the top 2 getting seats to the WSOP.

Thoughts?