For all those gamblers who are playing sports, how many times have you thinking: "If only I could play this match as well as I can play in practice". Playing real game vs  practice game are really different thing, the pressure is on the online tournament because of so many people that are watching that results of changing the way you play. That is one of the most common and also one of the biggest obstacles to overcome when playing real game like basketball, tennis, baseball, volleyball and etc.

To find the best solution to overcome that kind of problem is thinking why this things happen.
 
The main difference between the two is the caring. If you are playing practice game you don't care too much so you can play well without thinking anything, but when you play a match, you care a lot. In fact, you care too much.

You are worried when you make a mistake, every double fault you serve makes you insecure about your next serve and whatever the score is, you manage to interpret it in a negative, fearful way. so in other words you are afraid so it changes the way you play.

To overcome your fear, you need to be confident on yourself, do not think other people reaction if you do a mistake because that Is normal thing, we can do a lot of mistakes. Trust yourself and you will play well.