Luol Deng erupted for 29 points and Nate Reinking hit key baskets in a third-quarter surge that propelled Great Britain to an 82-74 EuroBasket qualifying Group D triumph over Bosnia and Herzegovina.
Deng, the Chicago Bulls star who averaged 24.5 points per game in Britain's promotion-winning campaign last year, is pouring in 26.7 per contest this summer in Division A.
With their second straight win, Britain have improved to 2-1 and now top Group D with the Czechs (2-1) - the team they hammered at the weekend in London.
Bosnia and Israel, who lost to the Czechs on Wednesday, are now 1-2.
The Bosnians are always tough opponents and they had upset on their minds at Birmingham's National Indoor Arena.
The teams were tied at 41-41 at half-time, but after the excellent Pops Mensah-Bonsu and Goran Ikonic exchanged baskets to start the third, the Brits took over by scoring 15 consecutive points.
Deng and Reinking hit back-to-back three-pointers.
Reinking followed with another jumper and then Deng drilled a three to make it 54-43.
When Flinder Boyd went in for a lay-up with 5:28 to play in the third quarter, Britain had a 58-43 advantage.
An 8-0 spurt capped by a Nemanja Gordic bucket at the start of the fourth brought Bosnia back into the game at 66-60, but Britain got the ball back into Deng's hands and he scored on a lay-up for a 68-60 lead.
Gordic answered with another basket, only for Andrew Sullivan to soar in and score with a tap-in to put Britain in front at 70-62.
Britain went back on top by 15 before settling for an eight-point triumph.
Mensah-Bonsu had 15 points and 11 rebounds for Britain.
Kenan Bajramovic had 15 points and eight rebounds for Bosnia, who slumped to 1-2 with this defeat.