Seal Diouf, a native of the Netherlands who prepped at the Dunn School in Santa Barbara, CA, committed to Georgetown following the 2023-24 season . Diouf averaged 23 points and 11 rebounds at Dunn (16-10 in 2023-24), which competes at the smaller Division IV level of California high school play. A three-star recruit ranked #254 nationally, he played alongside his brother, Latif, who signed with Tennessee-Chattanooga.

In comments, Diouf said that "Coach Cooley and his staff provided a sense of genuine care and commitment, not just to the game but to the players overall growth. From our first meeting, they were open about their vision for the program and how I fit into that plan. I felt an immediate connection with their approach and philosophy."

Seal Diouf did not see action in the 2024-25 season and was redshirted. He played in 12 games in 2025-26, mostly during the injury period for backup center Vince Iwuchukwu.