30 years, I’d say. Maybe 35 or 40.
When I was a kid, closers often went multiple innings. Guys like Goose Gossage and Rollie Fingers would routinely go 2 or even more to finish a game. Of course, starting pitcher often went, wait for it, 9 innings or sometimes more.
One of the most memorable games I ever listened to was a game from Anaheim, had to be 1973 or 1974. Nolan Ryan vs. Luis Tiant. Angels won it in 15, with Tiant going the distance for the Sox. Ryan was removed kicking and screaming after only 12 or 13.