Griffin Yow has officially agreed to sign a contract with Belgium-based Westerlo, a newly promoted club to the Belgian First Division A – after finishing last season in 1st place in the Belgian First Division B. The 19-year-old American striker is set to fly to Belgium for his medical evaluation and final contract signatures as reported by Kersten Steurbaut.
Yow scored his first professional goal against Memphis 901 FC for Loudoun United FC on March 16, 2019.
On March 19, 2019, he became the 12th homegrown player to be signed with D.C. United. Yow made his professional debut with D.C. United in the 90th minute replacing Paul Arriola against New York City FC on April 21, 2019. Yow scored his first non-competitive goal for D.C. United in a friendly against Real Betis on May 22, 2019. Yow made his first start with D.C. United on July 4, 2019 against FC Dallas, playing 58 minutes in a 0–2 loss. On September 19, 2020, Yow scored his first Major League Soccer goal against Toronto FC, equalizing the game 2–2.

Yow has appeared for the United States under-17 team, scoring his first goal against Brazil’s U-17 football team in a friendly tournament. In October 2019, he was named to the squad for the 2019 FIFA U-17 World Cup in Brazil.