The Broncos have played out of 2 cities and these records include both cities, but I will break it down a bit.
The Pats and Broncos first met in the Playoffs in 1974. The Broncos put up a fight but the eventual Memorial Cup winner would prevail in 6 games. The Pats outscored the Broncos 29-22 in the series.
The next season the Broncos moved to Lethbridge (where they played until the 1986-87 season) and again faced the Broncos and again prevailed in 6 games outscoring the Broncos 27-20 in the series.
The Pats and Broncos wouldn't meet in the playoffs again until the 1979-80 season and the Pats dominated the series in a 4 game sweep outscoring the Broncos 28-16 in the process. The Pats went on to the Memorial Cup tournament.
The Pats met the Broncos again in the 1982 playoffs where the Broncos had a 3 games to 2 lead coming back to Regina for game 6 only to lose the final two games by a combined score of 11-3. The Pats took the series in 7. Pats outscored the Broncos 26-18 in the series.
In the 1986 playoffs the WHL decided to do an Eastern Division Round Robin with 6 teams involved. Prince Albert, Medicine Hat, Saskatoon, Moose Jaw, the Pats and Broncos were all involved in the round robin. Each team played each other once and the Pats and Broncos each ended up with one win a piece, both wins were against each other (neither advanced). In the 2 games the Broncos outscored the Pats 10-9.
The next time the Pats and Broncos met was when the team was solidly back in Swift Current. The 1988 playoffs first round was a best of 5 series in which the Broncos won in 4 games. The Broncos outscored the Pats 24-20 in the 4 games.
The teams met again in the 1990 playoffs, again in a best of 5 series to open up the playoffs. The Pats prevailed in this one 3 games to 1, outscoring the Broncos 17-16.
The Broncos were not kind to the Pats in the 1993 playoffs. The Broncos swept the Pats in 4 straight outscoring them 27-13. That one stung.
It took 14 more years for the Pats and Broncos to clash in the playoffs again, finally in 2007 it happened. The Pats took the Broncos out in 6 hard fought games. Pats outscored the Broncos 21-14.
The Broncos avenged the 2007 defeat by taking the Pats out in 6 games in the 2008 playoffs. The Broncos won the last 3 games of the series to put the finishing touches on the series. Broncos out scored the Pats 25-18 in the series.
With all that said here is a breakdown:
Historically against the Broncos franchise: