2019: After showing a lot of potential with Loudoun United, Yow was called up to D.C. United's first team. At just 16-years-old, Yow made his debut for the Black-and-Red as a substitute in the match against New York City FC on April 21. Yow started his first match for the Black-and-Red in the 2-0 defeat against FC Dallas on July 4. The young forward recorded his first goal for D.C. United in a friendly against Spanish side Real Betis on May 22.
Griffin Yow spent four years with the D.C. United Academy (2016-2019) and scored 41 goals in 68 U.S. Soccer Development Academy (USSDA) appearances. Yow spent the 2019 season going back and forth between the first team and Loudoun United. Yow made his professional debut for D.C. United’s new USL Championship affiliate, Loudoun United FC, as a 59th-minute substitute in their inaugural match as a club against Nashville SC on March 9. Yow started the following match against Memphis 901 FC and scored his first professional goal and the first goal in Loudoun United history in the 30th minute on the way to a 1-1 draw. Yow finished the season in the USL Championship with three goals in 15 appearances.
The forward has been called up to the U.S. Youth National Team multiple times including the 2018 U-17 Nike Friendlies. Yow featured in four matches against England (3-1 loss, Oct. 12, 2018) Portugal (1-1 Tie, Nov. 28), Turkey (1-0 Win, November 30) and Brazil (1-1 Tie, Dec. 2). He scored the lone goals for the United States U-17 team in the draws against Portugal and Brazil. Yow was called up for the United States to represent his country at the U-17 World Cup. The forward featured twice in the group stages though the United States failed to advance in the tournament.
D.C. United signed Griffin Yow on March 19, 2019, as the 12th Homegrown player in club history.