With Kenley Jansen coming off a remarkable 2017 campaign and postseason that saw him pitch multiple innings on several occasions, the Los Angeles Dodgers essentially held him out of Spring Training the following year.
That wound up doing Jansen more harm than good, as his velocity and command suffered come the regular season. Jansen never quite found his footing in 2018, and efforts to do so were undermined when he experienced another bout with an irregular heartbeat.
Jansen ultimately underwent a second heart procedure in the offseason and upon receiving a clean bill of health, vowed to have a much different workload this spring.