The Oakland A’s had arguably the best bullpen in baseball in 2020, led by AL Reliever of the Year Liam Hendriks and All-MLB Team finalist Jake Diekman.
They lost Hendriks over the winter in free agency, as well as setup man Joakim Soria, and yet somehow came out on the other side with a potentially upgraded pen. Replacing Hendriks is Trevor Rosenthal, himself a former All-Star who nearly matched Hendriks’ lofty numbers in 2020, and in for Soria is Sergio Romo, who is basically an exact replacement in terms of production.