Madison Bumgarner of the San Fransico Giants is no doubt the biggest name on this list. He is a four-time All-Star pitcher and considered one of the top pitchers in the league for a stretch of years. After four straight years among the best pitchers in the league, Bumgarner injured his shoulder in a dirt bike accident and missed two months.
While I won’t say that the injury caused a decline, his overall statistical performance has declined since he missed the two months after the accident. Whether it is connected to the shoulder, is unclear but even so, he’s still worthy of being a staff ace or at worse number two starter on most teams.
Bumgarner will be the most costly of all the options on this list, most likely would cost the Twins a top-five prospect and probably another prospect in the top 20. Bumgarner is 29 so he has several years left to be a productive starter if the Twins should want to sign him past 2019 but again that price could be high. Maybe the biggest reason to make the move for Bumgarner is that he’s been one of the best playoff pitchers in the league during his career, an area the Twins current staff is sorely lacking.