"What is hard is Berrios isn’t likely making it as a starter in the 60s. His inning load just isn’t there." Perry threw 167.2 innings and Pascual 156.0 in 1965. Berrios threw 200.1 this year. Pascual had 1.1 WAR on the year and started in the series. Berrios would be a significant upgrade over 1965 Pascual and wouldn't have required Grant and Kaat pitching on two days rest in the series. Kaat lasted three innings on two days rest in the seventh game after going 2.1 on three days in the fifth game. For context, during the season, he'd averaged 7.8 innings on four days rest, only 6.1 innings on three days rest, and 5.0 innings on his four starts on two days rest. (Caveat: The latter includes him pitching just 2 innings in the final game of the season. Given that they won by 7 games, that may have been a tuneup. Even so, he averaged less than 6 innings in the other four starts. All in all, Grant, Kaat, Berrios, Grant, Kaat, Berrios, Grant would have been a better arrangement than Grant, Kaat, Pascual, Grant, Kaat, Grant, Kaat.