Kenley Jansen's frustration boiling out shows how big a mess the Red Sox are
Kenley Jansen Is Fighting the Clock, but He's Hardly Alone
Kenley Jansen throwing harder cutter in 2023
Red Sox closer Kenley Jansen needed a few pitches, but once he found a groove, it was game over for Phillies - The Boston Globe
How MLB's new rules are shaping the 2022-23 offseason and changing the art of team building - The Athletic
MLB Pitch Clock Isn't Responsible for Ace Pitcher Struggles
Red Sox: Kenley Jansen calls out MLB for 'ruining careers' with pitch clock
MLB pitchers discuss adapting to pitch timer in 2023
Red Sox closer Kenley Jansen, one of the slowest workers in baseball, says he will adjust to MLB's new pitch clock - The Boston Globe
How four rule changes will impact Major League Baseball in 2023