Cory Higgins scored the game-winning two-pointer with 0.8 seconds to go and FC Barcelona advanced to the EuroLeague Championship Game.
In a late thriller at Lanxess Arena, Higgins stunned Armani Milano and handed FC Barcelona the win (84-82) and the qualification for the Final.
FC Barcelona led by as many as 11 in the contest (49-38), but the Italians went on a 10-29 run to take the lead (59-67).
The Catalans came back again and the game was decided in the final seconds, with Higgins (11points) hitting the game-winner and Kevin Punter (23 points) missing the three-pointer at the buzzer.
FC Barcelona will now face Anadolu Efes, which edged CSKA Moscow (86-89) in the first semi-final, in another late thriller.