Pat Connaughton (Blazers, Bucks) was a first round baseball prospect with a 94 mph fastball. The Orioles drafted him in the 4th round and gave him 428K due to his love of basketball.
He went to low A (not short season) and pitched well. He went back to Norte Dame for senior year and continued to play basketball. The Blazers fearing he was a better baseball prospect drafted him in the 2nd round. Only 1st round NBA contracts are guaranteed.
He’s now 26 in his 4th season as an NBA 8th/9th man. The Orioles have not taken him to court to recoup money. As of last year they mentioned they were still hoping he would return to baseball.
In three NBA seasons he’s made 3M. He just signed for one year guaranteed at 1.5M. The Bucks hold the option on the second year. The Orioles see him returning to baseball next year at 27 as last chance.
It was years ago but the Celtics paid the Blue Jays what Danny Ainge would have had to return by leaving the organization to play basketball.
In both cases these baseball players went to the minors (Ainge got called up to start) then blossomed as college basketball players.