Chase Louis De Jong (born December 29, 1993) is an American professional baseball pitcher who is a free agent.

He has previously played in Major League Baseball (MLB) for the Seattle Mariners, Minnesota Twins, Houston Astros, and Pittsburgh Pirates.

[2] After signing for a bonus of $620,300,[3] De Jong was assigned to the Gulf Coast League Blue Jays and made 6 relief appearances for the team, posting a 1–0 record with a 1.50 earned run average and 15 strikeouts over 12 innings, with only 1 walk.

[3] De Jong made 23 appearances for Lansing in 2014, 21 of which were starts, and compiled a record of 1–6 with a 4.82 ERA and 73 strikeouts in 97 innings pitched.

[7] To start the 2016 season, he was promoted to the Double-A Tulsa Drillers of the Texas League,[8] where he was selected to the mid-season all-star team.

[12] On March 1, 2017, he was traded to the Seattle Mariners in exchange for minor leaguers Drew Jackson and Aneurys Zabala.

[15] After the game, De Jong was optioned to the Tacoma Rainiers of the Pacific Coast League after the Mariners activated Dillon Overton from the paternity list.

[16] On July 30, 2018, De Jong was traded to the Minnesota Twins along with infielder Ryan Costello for pitcher Zach Duke.

[24] He made his season debut as the Pirates’ starting pitcher against the Colorado Rockies, going 5.0 innings while only allowing 1 run.

[28] Assigned to the Indianapolis Indians of the Triple-A International League to begin the year, he combined with Austin Brice and Yerry De Los Santos to throw a no-hitter on April 14.

[30] On August 30, De Jong earned his first career save after closing out a game against the Milwaukee Brewers with 1+2⁄3 scoreless innings.

[34] He allowed six runs on five hits and a walk in two innings of work before he was designated for assignment again on June 9 after Canaan Smith-Njigba was added to the roster.