Mass Delete Games/Practices

The easiest way is to use the Cancellations -> Create Cancellations page. There's a bulk delete button on that page. It's day-by-day and also filtered for either games or practices, but the process is:

1.     Choose the date

2.     Whatever the game/practices filter is, use that

3.     Click Delete All

4.     Change the game/practice filter to the other option

5.     Click Delete All

6.     Choose new date & repeat 2-6

That should take 5-10 seconds per day so you can do a couple weeks in about a minute or two. Plus it lets you be pretty explicit about the range of dates where the games/practice are being deleted.