How to make a dog bring a ball straight back to you?

First you can start with two balls and dogs generally want what u have so hide one of your balls in your pocked and throw one. Once your dog has got the ball you then bring out the other, one, if he hasn't already dropped the ball (they usually see the other ball and drops he one in their mouth, then say drop and throw one of the other ball. The other idea is to give a treat or something like chicken, hope I helped :)

Teaching a reliable retrieve isn't difficult but there are several steps and you need to teach them in order. Never allow your dog to drop the ball or retrieved object at your feet. Always insist upon the dog giving it to your hand. Here is how we teach this in our competition obedience classes;
http://www.dog-obedience-training-review.com/fetch-or-retrieve.html

She's getting an extra game out of it by making you chase her for the ball. Stop playing that game with her. She wants the ball thrown, she has to bring it.

It's the owner that needs to learn how to train the dog, so sending it away to be trained means it will work for the trainer, but when it gets home the owner will probably do everything wrong and the dog will not respond correctly. Learn how to train your dog obedience https://tr.im/ZdQ1J

Part of the fun in having a well trained dog is learning to train it correctly yourself. That is also the most rewarding. Some people send dogs away for specialist training, like sheep herding, protection work or gundog training, but even then, that is the lazy way out and good trainers do their own training to get what they want from their own dogs.

However it is always more productive to train your dog under a good instructor, especially if you are not experienced

My puppy has some issues with fetch at first. We put him on a tie out and would throw the ball to the edge of his range. He knew he couldn't go any further in that direction, so he had to go the opposite way, which was towards us. We'd then clap and call for him excitedly. He'd get closer to us out of excitement, but not wanting to give up the ball he'd start to dart away again. Before he could do that, one of us would grab the tie out and "reel him in" while still calling him to come. When he got to us, we'd praise him and then try to get him to drop the ball for us. If he wouldn't we'd just say drop it as we pulled it out of his mouth, then praise him as if he did it right. Eventually after enough repetition he started to understand and do it on his own. He still tries to run off sometimes because he thinks its fun to play keep-away. When he does this we just ignore him until he either brings the ball back or drops it somewhere and forgets about it.

HOW TO TEACH YOUR DOG TO FETCH/RETRIEVE.
The ideal location for this is a hall, a narrow passage or the kitchen.

Prepare some treats, hopefully not just dried dog food. You will also need a toy or a ball; if it’s a big dog don’t use a small ball as he could swallow it.

Stand at the end of the hall or room and wind your dog up by throwing whatever object that you have decided to use, into the air several times and catching it yourself. Make excitable noises, then throw the object.
Your dog will probably pick up the object and take it to the corner of the room, under a chair or table. Go to your dog with a treat in your hand and your dog will drop the object in favour of the treat.

***Wind your dog up again with the object, get him excited and return to the place where you first threw the object from and throw it again. Your dog will pick up the object and then take it to the same place which he took it to the first time. Again offer a treat and he will give the object up.***

Repeat from ***to *** about eight times, however if he looses interest stop and start again the next day. If he is still keen throw the object from the place where he has habitually taken it and he will return there with the object. Show him a treat, exchange this for the object and throw a handful of treats onto the floor. End this exercise and do it again tomorrow. Eventually you can progress to the garden and beyond.

This was copied from one of John Rogersons books, hopefully he will not object.

ughh my friends dog does this it is so annoying! they sit there looking cute trying to get you to throw the ball and then when you do they dont give it back and suddenly they start teasing you! You could try enforcing treats when she does drop the ball first time, and use a slightly sterner voice if she runs off with the ball?

Check this out, it might help- http://www.wikihow.com/Teach-Your-Dog-to-Drop-It