Sometimes, it can be tough to turn away from the waiver wire guys who helped your team the previous year. Jesus Aguilar likely won some leagues with his 35-homer campaign out of nowhere last season. Likewise, David Dahl provided juice in all categories when he saw the field in 2018.Unfortunately, adding somebody for free off of waivers is very different from investing an early draft pick in them. Advanced metrics suggest that both players above are likely to disappoint their fantasy owners based[...]