In the latest installment of “Catch a Rising Star,” Boston Celtics president Dany Ainge traveled to Greece to get a first-hand look at Giannis Adetokunbo, the 6-foot-10 point guard who is moving up draft boards by leaps and bounds. Aingle was in the house — and got heckled by Lakers fans — as Adetokunbo scored 19 points and grabbed 9 rebounds and two steals in the championship round of the Greek A2 league. [Read more…]