Freshman guard Josh Selby is declaring for the NBA draft, leaving Kansas with only two players who had a significant role in last season's 35-3 record.
Earlier, twin forwards Marcus and Markieff Morris, last season's top scorers and rebounders, hired an agent and announced they would skip their senior seasons.
The 6-foot-3 Selby was rated the overall No. 1 prospect in the nation when Kansas coach Bill Self signed him last year, but was suspended the first nine games by the NCAA for amateurism violations. He also missed several more with a foot injury and wound up averaging 7.9 points, 2.2 rebounds and 2.2 assists in 26 games.
Selby had spent more than a week working out in Las Vegas testing NBA interest. He tweeted Thursday he will miss Allen Fieldhouse, but was looking forward to "a new journey."
He added: "I will not return to Kansas next year. Making my dream a reality."
Selby averaged 12 points and 3.2 assists his first 13 games but injured his foot Feb. 1. He missed the next three games and was hampered the rest of the season.
The Jayhawks will need to be almost completely retooled next season. Seniors Tyrel Reed and Brady Morningstar are graduating and the Morris twins and Selby are leaving early for the NBA.