Winning a Ranked match wont come easy. It takes knowledge of your character and knowledge against your opponent. The more you play the easier wins will come because you will learn the tendencies of online players. People are creatures of habit and you will notice that people repeat the same things over and over again online.
You only need to win once to earn this achievement.
For TJ Combo the best thing to learn quickly is how to use his Shoot Grab. TJ feels like you should be in there punching but his punches really don't lead to much. If you land a shoot grab you can then do his Tremor to recapture the opponent to start a combo.