Turning Point: With scores tied at 64 going into the final five minutes, Roel Moors came to life, picking up seven late points as the inexperience of the British proved costly.
Game Hero: 34-year-old Moors has been there before and used his old head to guide the Belgians out of a tight situation, with his seven points in the final five taking his tally to 11.
Stats Don't Lie: Great Britain were 21-for-31 from the foul line and although Belgium were 14-for-21, they came up clutch in the final minute.
Belgium have made it two wins in two days in Ljubljana, knocking over Great Britain 76-71 to improve their chances of making a trip to the Second Round.
Following a second half that brought eleven lead changes, it took a 12-5 run in the closing minutes from the Lions to break the British resolve.
That, said veteran centre Axel Hervelle, bodes well as his side now try to secure an unexpected progress from their final two Group A games.
"We struggled in the first half but we never gave up," he declared.
"We fought for 40 minutes. They fought for 40 minutes. But our approach in the second half was better.
"Some players came off the bench and gave us energy. We played better defence. And our character and our energy came through. We have to play that basketball every time."
The Belgians raced 14-4 ahead with Wen Mukubu converting a trio of quickfire three-pointers. However GB responded, led by a game-high 19 points from Dan Clark.
Kieron Achara hit a three to round off a 9-2 run which reduced the deficit and set up an intense battle to gain the upper hand. Impressive young forward Myles Hesson, who plays for German side Giessen, pushed his side into a 38-33 lead at half-time and then Kyle Johnson increased their team's advantage to seven at the outset of the third.
"We lost our chemistry and, that one word we have in our gameplan, which is discipline," declared Lions coach Eddy Casteels.
Yet he got a response as the contest became a fight to see who would blink last. It came down to who would make the fewest turnovers and remain steady from the line and Belgium won out. Hervelle sent his side in front for good with 4:13 left and with Roel Moors providing the late cameo, Britain were left behind.
"They played a solid game today but I'm just disappointed," said Achara, who added 12 points.
"I felt like we had the game but we made some mental lapses in the second half and they capitalised on it. You can't make mental lapses like that in a tournament like this."