In Calgary we have to travel to the SSP famous Okotoks to watch baseball - just one of the many things to do there.
Seaman Stadium is a great little ballpark (capacity 5200) and the team (Okotoks Dawgs) are always competitive and attendance is always strong.
http://https://dawgsbaseball.ca/facilities/seaman-stadium/
The former AAA ballpark at the U of C north of McMahon has been left to rot as it sits where the City has been planning to build a field house for over a decade.