Baseball fans have a lot of projections at their disposal - PECOTA, Zips, Steamer, Cairo, etc. etc. One projection system is sometimes overlooked in certain circles, and I suspect because people view it as having a different purpose than projection - Vegas Lines. People think Vegas Lines are just trying to exploit the perceptions of casual fans.  But, because of how Vegas makes a profit - trying to get equal action on both sides of the line and simply taking a cut off the top - the market can "correct" lines until you get a sort of Wisdom of the Crowds result with the input of some very knowledgable people.  Depending on the year, you can get different results - but in short, Over / Unders from Vegas are a worthwhile resource when trying to figure out what will happen in the coming year.