HOW ACQUIRED: Signed on July 1, 2017 using Targeted Allocation Money.
Leerdam is an experienced right back in the prime of his career with proven skill and athleticism. He should compete for a starting spot with the Sounders in 2018.
INTERNATIONAL: Leerdam has represented Netherlands on the international stage, making 19 appearances and scoring one goal for the club's U-21 side from 2010-2013. He also recorded three appearances for the U-19 side in 2009.
OUTSIDE MLS: Leerdam joins the Rave Green following nine professional seasons with Feyenoord and SBV Vitesse in the Eredivisie, the Netherlands' top division. The Utrecht native has amassed 186 career league appearances, with 16 goals and 8 assists in the Eredivisie dating back to 2008. After starring for Feyenoord's youth club from 2005-2008, Leerdam signed a professional contract with the First Team and went on to become a regular for five seasons, accumulating over 100 appearances across all competitions for the Rotterdam side. He moved to Vitesse in 2013, where he scored a career-high eight goals in the 2013-2014 campaign, leading the Arnhem-based club to a fourth-place finish in the table. He went on to make over 100 all-competition appearances across four campaigns for Vitesse. In total, Leerdam's clubs have a record of 26-2-3 when the fullback registers a goal or an assist.