Kammala wannan jumla: A ranar 4 ga Nuwamba, 2017, an nada Barkett mataimakin kocin buga kwallo na Boston Red Sox, yana aiki a kan ma'aikatan sabon manajan Alex Cora, kuma yana cikin wannan rawar lokacin da kungiyar ta lashe gasar
Gasar cin kofin duniya ta 2018. Ya dawo a matsayin mataimakin mai horar da Boston a kakar wasa ta 2019, kuma ya dauki nauyin aikin horar da na uku a watan Yuni, lokacin da kocin na uku na kungiyar, Carlos Febles, ke da matsala da ƙafarsa ta dama. Bayan Red Sox na 2019 ya rasa wasan karshe, an bayar da rahoton cewa an kori Barkett a farkon Oktoba, wanda ƙungiyar ta tabbatar a ranar 8 ga Oktoba.