Poker Riddle

All the players long to have me
But I must keep my visits brief
Call me "the Hat" at the table
Where my owner is ruler and chief

Some say I don't matter
But just let me make my mark
I must control all the action
You will respect me if you are smart

Dressed in my plain attire
My title is very clear
I'm the biggest of all my family
Hence the buck stops here

By: Veneno

If you want to confirm your answer, send an email to yosoyveneno@yahoo.com with subject - Poker Riddle.

Later!