Could Red Sox prospect Durbin Feltman help bullpen in 2019? Early results are promising originally appeared on nbcsportsboston.com Durbin Feltman is quickly becoming one of the most intriguing prospects in the Boston Red Sox farm system, and you might be hearing a lot more from him later in the year. The Red Sox bullpen took a hit this offseason when Joe Kelly left to sign with the Los Angeles Dodgers in free agency and the team decided not to bring back free-agent closer Craig Kimbrel.