The Seattle Mariners acquired left-handed reliever Jose A. Ferrer in a trade with the Washington Nationals on Saturday.

Seattle sent catcher Harry Ford and minor league pitcher Isaac Lyon to Washington for Ferrer, who set career highs with 11 saves and 21 holds in 72 appearances this year.

The 22-year-old Ford is one of baseball’s top prospects, but the Mariners already have All-Star slugger Cal Raleigh at catcher. Ford made his major league debut in September, going 1 for 6 in eight games.

The Mariners won the AL West this year for the first time since 2001. They made it to the AL Championship Series before they were eliminated by Toronto in seven games.

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