Janssen had a 4.95 ERA in 48 appearances with the Washington Nationals last season.
He had pitched a bullpen in Mira Costa on Thursday and was offered a contract by the Padres on Friday, according to Padres.com
“Nothing is promised, nothing is guaranteed,” he said to Padres.com. “But he does have a very legitimate chance to factor into our bullpen.”
Janssen, 34, was born in Fountain Valley, and had a career-high 34 saves with the Toronto Blue Jays in 2013.
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