New York Mets After college, den Dekker was selected by the
New York Mets in the fifth round of the
2010 Major League Baseball draft. He made his pro debut that summer with the
Gulf Coast League Mets, hitting .278 with five RBIs in five games before being promoted to the
Savannah Sand Gnats. In 2011, den Dekker played for the
St. Lucie Mets and
Binghamton Mets. He was invited to
spring training in 2012. In 2013, den Dekker received his third invitation to the Mets Spring training camp. He played in a career-high 19 games and posted a .205 batting average as he went 9-for-44 with one home run and seven runs batted in while striking out 16 times. On March 24, den Dekker broke his right wrist attempting to make a play on a fly ball hit by
Detroit Tigers outfielder
Austin Jackson. On August 27, the Mets promoted den Dekker to the major leagues. He made his major league debut on August 29. He hit his first MLB home run on September 1, off
Ross Ohlendorf of the
Washington Nationals. For the season, he batted .207/.270/.276.
Washington Nationals On March 30, 2015, the Mets traded den Dekker to the Washington Nationals for pitcher
Jerry Blevins. Den Dekker was optioned to the
Syracuse Chiefs at the end of Spring Training on April 1, 2016. He was recalled on April 6 when
Ben Revere was placed on the disabled list. After the Nationals optioned him back to Syracuse later in the season, den Dekker hit just .208 before being taken off the 40-man roster and outrighted to the minors on September 3. For the season, he batted .176/.282/.294.
Miami Marlins On November 30, 2016, den Dekker signed a minor league contract with the
Miami Marlins organization. On May 2, 2017, he opted out of his contract, becoming a free agent.
Detroit Tigers in 2017 On May 16, 2017, den Dekker signed a minor league deal with the
Detroit Tigers. He was called up by the Tigers on June 23. On July 5, 2017, he was designated for assignment and sent outright to the
Toledo Mud Hens four days later. For the season, he batted 1-for-7. On October 2, 2018, he elected to become a free agent.
Long Island Ducks On March 26, 2019, den Dekker signed with the
Long Island Ducks of the independent
Atlantic League of Professional Baseball. On June 7, he announced his retirement from professional baseball. In 29 games he hit .268/.336/.446 with 2 home runs, 12 RBIs and 4 stolen bases. ==Coaching career==