Just to illustrate the potential importance of run prevention a little further, I looked at the last full regular season, 2019, in terms of runs allowed. In 2019 there were six teams that were clearly better than everyone else in total runs allowed. Those were the Dodgers (613 RA), Astros (640 RA), Rays (656 RA), Indians (657 RA), Cardinals (662 RA), and A’s (680 RA). Everyone else was greater than 711 in runs allowed, and the league average was 782 runs allowed. Of those six top teams, five made the playoffs. The Indians were the only team among that group that missed the playoffs, and they won 93-games.