I'm not sure of the controls on the xbox.
But check your manual and find out which button you have to hold to play the one-two.
Whichever button that is, hold it, and when you play the pass, your man will make the run immediately. You will know what a one-two is because the man who plays the ball will immediately make the run forwards.
Now in the instruction manual it will tell you to press another button to complete the one-two (or "give-and-go" as it is otherwise known). But this is not what I'm talking about.
You can either play a direct one-two, where your man passes the ball, makes the run, and then gets the return ball straigh back. Or you can do it another way, and this is the way that gets you most success.
Play the one-two by holding whatever button it is you have to press, and instead of returning the pass immediately, let the man run forward. Now the secret to perfecting this move is simple in theory, but hard to master. But once you do master it you will set up some great attacks.
Basically, what you are trying to do is buy the player who is making the run enough time to get free into the space he is running into, by twisting and turning away from the players coming to close your man down.
It goes like this:
A/ Play the ball whilst holding the appropriate button.
B/ Use the man who receives the pass to keep hold of the ball long enough to buy some space for the player who is running.
C/ watch the man who is making the run, and decide when you want to play the return ball to him.
The secret of making it work is to keep possesion of the ball by wriggling, turning, or whatever, whilst at the same time watching the man who is making the run. Basically you are doing two things at the same time. Waiting for the best time to play the through ball, and keeping possesion of the ball yourself so you can play it to him.
It takes a long time to master, but is without doubt the most difficult thing of all to defend against. It works especially well in two player mode.
A big tip here though is to remember one thing. Don't ALWAYS choose to play the through ball. Or even play to the player who is making the run.
Sometimes you play the one two, but your man runs doen a blind alley, or into a bad position, or a defender follows him. In this case it is better to turn away and play it to someone else.
This move is even more useful for this reason. Especially in two player mode.
You see, the man who makes the run is sometimes followed by a defender, which makes more space for another player who might be by your side. So this opens up space for other players.
In two player mode though, things get even more interesting. I play like this virtually all over the pitch. Sometimes I choose to use the runner, sometimes not. And it always throws off whoever I play. Many times the lads who play against me know that I use this method, so they sometimes track the runner, and lose track of the man who is in possesion of the ball himself. Basically, the runner is used as a dummy, and if you can beat the last man with the player in possesion you are clean through on goal.
It goes on and on. I could talk to you all night about all hte various tips and tricks. But there are so many little details that it would be impossible to cram them all in. Basically pro evo is a masterful piece of software for the simple reason that it allows so much diversity, individuality, and improvement.
But the one-two technique which I have explained to yu is one thing I would urge anyone to learn and adapt to.
No matter how much you think you will never get the hang of it, keep trying. Because I don't think there is a better feeling you can have on a games console than when you learn to play some top drawer football on pro evo.