The summer is a GREAT time to work on your 1 on 1 game, however, be careful how you play the games. Make them realistic. 99% of the time I see players going 1 on 1 they are playing the game “incorrect”.
Incorrect: Check the ball up at the top of the key, make a double between the legs, behind the back, double cross, repeat all that and then back your defender down into the paint, etc, etc…THAT IS NOT REALISTIC
Correct: Check the ball up at the top of the key and you have 4 seconds and 3 dribbles to get a shot off. You need to be able to quickly make correct and consistent reads to attack the defense.
Below is a drill I picked up from Coach Frank Martin at Kansas State. This drill is 1 of 8 that will be available soon as an online download.