This will be at least the fourth NBA workout for Toppin, who has previously announced workouts with the Boston Celtics, Cleveland Cavaliers and San Antonio Spurs.
Toppin, who led Dayton in scoring with 14.4 points per game last season as a redshirt freshman, announced April 17 he was declaring for the NBA Draft and would go through the pre-draft process while maintaining his eligibility. He's one of 233 early-entry prospects. He has until May 29 to decide to stay in the draft or return to school. He has three seasons of eligibility remaining.
The draft will be held June 20. Dayton's Kostas Antetokounmpo was the last player selected in the second round in 2018. He was the first Flyer drafted since Negele Knight in 1990.
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Toppin is the third Dayton player since 2016 to declare for the draft as an underclassmen. Charles Cooke went through the process after his junior season in 2016. He also worked out for the Celtics. He decided to return for his senior year.