Matthew Bryan-Amaning hit 18 points but made a losing senior debut for Great Britain in an 82-78 defeat to Canada in Surrey.
Chris Finch’s men, playing without Pops Mensah-Bonsu and Luol Deng, built a 16 points lead in the second period in their first warm-up game ahead of this summer’s European qualifiers.
But Canada made a late rally with an 18-5 burst in the fourth quarter and although Yanders helped bring GB back to within 1 point with 14 seconds left, the visitors sealed victory from the foul line.
Dan Clark added 12 while Casey Archibald led the victors with 18.
GB host Finland at the same venue on Friday.