A business might want to hire an Industrial Engineer. The I.E. might even give them a few good ideas for efficiency. But you don't want the I.E. running the place. Leave that to the Operations people. The same with sabermetrics. You can learn something from it , but don't let it take over operations. The analytic devotees get carried away with it. When they start telling you that home runs are overrated, stolen bases are overrated, closers are overrated, etc. , they want to reinvent the game. Few , if any , players, coaches or managers would agree with that thinking. Take what you can from sabermetrics , but don't go crazy with it. This is still a sport. It is not calculus. Have fun and enjoy it.