The Red Sox are having a surprisingly good start to their season, and one of the big reasons has been both the health and the performance of their rotation. They have exceeded expectations on both fronts, although cracks are starting to show in a few different spots as far as the performance goes. All five of their starters this year have had really strong stretches, but they’ve also had portions of the year in which it’s not clear they will be able to keep this team in contention for the entire season. As such, it’s sort of a muddled group of five at the moment.