UPDATE: The deal is official.
10:44 a.m. ET: The Padres have apparently secured some extra bullpen depth, as Corey Brock of MLB.com reports that veteran reliever Casey Janssen has a locker in the clubhouse. Nothing is official, but Brock writes that he likely received a minor league contract with an invitation to spring training.
Janssen missed the early part of last season due to a shoulder issue and ended up with a 4.95 ERA and 27/8 K/BB ratio over 40 innings. The 34-year-old became a free agent in November after the Nationals declined a $7 million option on him for 2016.