He was traded to the Seattle Mariners on March 1, 2017, in exchange for minor leaguers Drew Jackson and Aneurys Zabala.
On April 3, 2017, the Mariners promoted him to the main league roster.
On April 5, 2017, he made his major league debut against the Houston Astros at Minute Maid Park in Houston, losing 5–3 to the Astros after giving up a three-run home run to George Springer in the bottom of the 13th inning.
De Jong was optioned to the Pacific Coast League’s Tacoma Rainiers after the Mariners activated Dillon Overton from the paternity list following the game.
De Jong was traded to the Minnesota Twins on July 30, 2018, along with infielder Ryan Costello, for pitcher Zach Duke.
In September of that year, he was called up. After the official signing of Martin Perez, De Jong was designated for assignment on January 30, 2019.
On February 6, he was declared free. On April 6, 2019, DeJong’s contract was chosen.
He was sent back to Triple-A Rochester after a game against the Mets in which he gave up 4 earned runs, 1 home run, and 3 walks in 1 inning pitched. On April 26, 2019, DeJong was officially removed from the roster.
The Houston Astros purchased De Jong’s rights from the Sugar Land Skeeters on August 3, 2020. De Jong was added to the active roster on August 23, 2020.
De Jong struggled to a 14.73 ERA in three appearances for the Astros. De Jong chose free agency on October 30.
How Tall Is Chase De Jong?
Chase De Jong stands at a height of 1.93 m.