League and Hatcher figure to play key roles as the Dodgers wait for Jansen, who won't be back until at least May. Hatcher was acquired from the Marlins in the Dee Gordon trade this past offseason, while League has ridden the roller coaster since coming to the Dodgers. He is coming off an underappreciated 2014 season, when he had a 2.57 ERA in 63 appearances, but a 1.46 WHIP.
"We've been working on him getting the ball to the other side of the plate," Mattingly said of League, who has relied on his sinker. "Going in on lefties and away from righties, using his slider. He's been working really hard."
Mattingly said he might take the duration of Spring Training before deciding how he will set up his bullpen and who will be the closer.
Ken Gurnick is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.