Former New York Mets right fielder Travis Jankowski. Gregory Fisher-USA TODAY Sports

The Mariners announced they’ve designated outfielder Travis Jankowski for assignment. The move opens an active roster spot for corner infielder/outfielder Jake Lamb, who has reported to the club. Seattle acquired Lamb from the Dodgers in the hours leading up to the trade deadline. The M’s 40-man roster count falls to 39.

Jankowski was just claimed off waivers from the Mets on Monday. He made a lone appearance as a Mariner, striking out in his one at-bat. The left-handed hitter worked primarily as a defensive specialist and pinch runner in Queens, seeing action in 43 games but only walking up to the plate on 63 occasions. He didn’t produce much offensively, hitting .167/.286/.167 without an extra-base hit.

The 31-year-old has appeared in parts of eight big league seasons, also spending time with the Padres, Reds and Phillies. He’s a career .236/.319/.310 hitter, showing solid plate discipline and bat-to-ball skills but very little power. Jankowski’s an elite runner who’s capable of playing all three outfield positions, leading clubs to give him opportunities as a fourth or fifth outfielder.

Lamb was already on the 40-man roster, but the Mariners had to designate Jankowski for assignment if they wished to take him off the big league club. As a player with more than five years of major league service time, he’d have the right to refuse any optional assignment to Triple-A Tacoma in favor of a trip to free agency. Seattle will now place him on waivers over the next few days, where another team could bring him aboard if they’re willing to assume the remainder of his $1.25M salary (approximately $426K) and keep him in the majors.

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