|Oleksandr Kobets was once again outstanding for Ukraine|
All four teams that were undefeated after Day Three at the U18 European Championship Division B were still perfect after the fourth day of games as the quartet all continued their winning ways while Israel needed overtime to beat Estonia.
Ukraine allowed just nine points in the second quarter in pulling away from the Irish, who got 14 points from Cian Hickey.
Portugal raced back from a 10-point deficit in the fourth quarter with a 13-0 run to win 56-51 over Bulgaria in the group. Diogo Brito scored 17 points for the Portuguese, who are second at 3-1 and Bulgaria dropped to 1-3.
There is a tie atop Group C as both Slovenia and Finland improved to 3-0 with wins.
The fourth undefeated team is Germany, who man-handled Austria 101-50 in Group D. Victor Wagner paced Germany with 20 points while Constantin Ebert added 18 points, Luis Figge had 14 points and Joschka Ferner chipped in 10 as the Germans booked their spot in the next stage.
Israel moved to 3-1 in the group thanks to a 107-93 overtime win over Estonia. Robert Valge nailed a three-pointer with six seconds left to force overtime at 85-85 and Israel used a 9-0 run in the extra session to get the win.