For this achievement, you only have to beat the first six tournament venues, with each having four games to win:
- New York
- Tokyo
- Paris
- Shanghai
- London
- Las Vegas
What I did to win fairly consistently was choose at least one player with a great 3-point score and one player with a great dunk score. I would always get the first shot in since it gives you an extra point (3-pointer recommended). After that, just keep dunking to fill your lottery bar. You can take the occasional 3-pointer if you're behind on points or want to create a larger gap between you and the opposing team.
Also, just focus on winning each bracket instead of the doing the challenges at the same time. I hope this helps!