Report: Mariners agree to 1-year deal with De Fratus

Jerry Dipoto's whirlwind offseason continued Wednesday afternoon, when the Seattle Mariners' new general manager agreed to a one-year, $750,000 deal with right-hander Justin De Fratus, according to CBS Sports' Jon Heyman.

In the previous 12 hours, Dipoto also reportedly shipped former All-Star Mark Trumbo to the Baltimore Orioles and signed veteran outfielder Nori Aoki to a one-year deal.

De Fratus, who logged a career-high 61 appearances with the Philadelphia Phillies last season, will join a revamped Mariners bullpen bolstered last month by the addition of 38-year-old veteran Joaquin Benoit. Last season, Seattle's relievers fashioned the fourth-worst ERA (4.15) and third-worst WHIP (1.38) in the American League, and Dipoto stressed at his introductory press conference that "the bullpen needs to have more layers than it presently has."

Despite pitching often last season, though, De Fratus wasn't all that effective. The 28-year-old fashioned a career-worst 5.51 ERA with a 1.55 WHIP in 61 appearances, posting his lowest strikeout rate (18.8 percent) since 2012 while allowing nine homers in 80 innings (1.01 per nine).