If you have added something to your teams schedules, the players HAVE to be associated with it in order for it to show on their page, app, etc. This includes tournaments. Adding something to the schedule does not guarantee that they will see it.
Click on the team in your schedule and click 'add players' and it will automatically add to their schedules.
Also, check out this article to make sure you are adding practice rounds correctly: Add or Enter a Practice Round