David Howard Joplin (born November 18, 2002) is an American professional basketball player for the BCM Gravelines-Dunkerque of the French LNB Pro A.
As a senior at Brookfield Central High School, Joplin averaged 25.6 points, 10.6 rebounds and 2.6 assists per game. He committed to play college basketball for the Marquette Golden Eagles.
As a freshman in 2021-22, Joplin averaged 2.8 points in 32 games played. In 2022-23, he averaged 9.2 points and 3.2 rebounds in 36 games, earning Big East Conference Sixth Man of the Year honors. Ahead of the 2023-24 season, Joplin became a full-time starter for the Golden Eagles. That season, he made 37 starts and averaged 10.8 points and 3.9 rebounds per game. On November 23, 2024, Joplin tallied a team-high 29 points in a victory over Georgia. On November 27, he dropped 27 points in a 94-59 victory against Stonehill. On December 21, Joplin passed 1,000 career points,as he scored 19 in a win versus Xavier. On January 14, 2025, he notched a career-high 30 points in an overtime win over DePaul.
On August 12, 2025, Maxhuni signed with French team BCM Gravelines-Dunkerque.
His mother, Lisa Joplin, is a former police officer for the Milwaukee Police Department and currently works as a hair stylist. His father, Howard Joplin, was also a Milwaukee Police Department police officer and detective.