Neil Taylor featured for the full 90 minutes as Swans Under-21s went down 2-1 at Brentford in Development League Two South.
The Wales international played the whole game for the first time during his return from injury as Kristian O’Leary’s young side, who lost Josh Sheehan in the early stages through injury, were beaten for the first time in three games.
Farid El Alagui gave the Bees a 1-0 first-half lead and then Leon Redwood doubled the advantage after the break before Rory Donnelly quickly replied to give the Swans hope.
But Brentford held out the visitors to claim victory.
Swans: David Cornell, Liam Shephard, Joseph Jones (Keston Davies, 80), Scott Tancock, Neil Taylor, Alex Bray (James Loveridge, 65), Lee Lucas, Josh Sheehan (Henry Jones, 5), Kenji Gorre, Kurtis March, Rory Donnelly.
Subs not used: Oliver Davies, Connor Roberts.