If you want to play with Stewie2k you should check out ESEA.
Stewie2k often plays the ESEA Rank S (pugs for pros) but also hops into normal pugs that anyone can join.
Not only do you get a chance to play with the pros on ESEA, but you also have the opportunity to win money.
Play in the ESEA league with your team and compete against other teams for money.
One day you might climb the ranks and fight against the pros.