It will be an all-Lithuanian affair, as the team from Prienai is set to face the in-form Siauliai, who defeated Pyrinto in the other semi-final. TU/Rock and Pyrinto will play for third place.
Having won the first leg in Estonia by a single point, TonyBet broke away already in the first quarter, going on an 8-0 run to go up 16-9 five minutes into the game before increasing the gap to double digits.
The hosts led by as many as 15 points in the second quarter, but a good stretch to end the first half by TU/Rock restored a single-digit deficit, with nine points separating the sides at the interval.
However, Prienai jumped ahead by double figures once again after the game resumed and finished the third quarter with a 61-48 edge, before easing to a comfortable win in the final frame.
Zygimantas Janavicius, Gintaras Kadziulis, Vaidas Cepukaitis and Mindaugas Lukauskis all collected 15 points apiece for TonyBet.
For TU/Rock, Vilmantas Dilys finished with a game-high 20 points, Valmo Kriisa scored 14, while Janar Talts chipped in with 10 points and 8 boards.