The two teams struggled for momentum all afternoon, with the temperature topping 30C.
In a game of inches, it was the Tigers who ended the match on top with a 15.8 (98) to 13.17 (95) result.
In the end, both sides booted 16 goals, but it was the Demons’ 10 extra behinds that helped them crawl home in front.
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READ NOWSmall forward Brennan Stack bagged four goals for Perth in the 16.17 (113) to 16.7 (103) result.
After a tight first quarter, the Royals dominated to run out 91-point victors.
Scott Lycett and Joshua Smith both contributed three goals to the 20.17 (137) to 7.4 (46) result.
The home side jumped early with two Lachie Neale goals, but the Falcons slowly worked themselves back into the match.
The Swans won the final term by a goal, but it was the Falcons who held on to win 11.16 (82) to 11.13 (79).