Baseball Mystery Theme by BruceM

Question 7

Either of two answers is acceptable. One inspired a hashtag about things he did, including (according to a 2013 tweet by teammate Matt Carpenter) that he "Doubles up with me when there is 2 open seats on the bus." The other has been nicknamed The Federalist. Name either of these former teammates, whose spent 2018 in Detroit and KC/Arizona, respectively.

Pete Kozma; Jon Jay