It is difficult to come up with a more ideal situation for using a six-man rotation than what the Los Angeles Angels currently find themselves in. They have the three major ingredients: 1. They have Shohei Ohtani, the best pitcher coming over from Japan (who was apparently driven all the way from there by Mike Trout in a golf cart), a guy who has spent his entire career pitching with what Major League teams consider an extra day's rest. As the team's primary offseason investment, Ohtani is someone for who the Angels will want to facilitate the smoothest transition possible. 2. They have no ace, which means going to a six-man rotation won't force them to take starts away from the best pitcher on the team. More to the point: Their ace is Ohtani, the guy inspiring the idea of a six-man rotation in the first place. 3. All their other rotation members are, essentially, the same. The No. 2 pitcher is pretty much the same as the No. 6 pitcher. You neither lose nor gain anything by having any of them throw on any particular day. If you were to invent the scenario that would lead to a team using a six-man rotation all season, this is close to the exact one you'd come up with for Los Angeles. But I'll say it right now: No matter how much they claim they're going to try it, the Angels are not going to end the season with a six-man rotation. No one ever does. I'll be surprised if they make it a month. The idea of a six-man rotation pops every few years, and in a vacuum, there is some logic to it. Nothing messes with a team's plans more than pitcher injuries, so, theoretically, if you can ease the burden on your starters, you can have them pitch less often. And as starters lose influence in a world of expanded bullpens, de-emphasizing the rotation by adding to it has some appeal as well.
Why the Angels' 6-man rotation won't last
MLB.com | Feb 22