Captain Matt Thomas believes the mid-game change from 7-a-side to a 5-a-side was the reason for defeat.
The match format was altered with the score at 3-2, in Swansea’s favour, due to a series of heavy collisions early on.
“I think the game went really well for us, considering Cardiff are a team constantly finishing in the top ten at nationals,” said Thomas.
“Changing to 5-a-side benefited Cardiff, they are a much better side at that level and we are the opposite, playing better with seven.
“But under the circumstances, the pitch was too small for 7-a-side; it’s just something we had to deal with.”
Swansea were beaten heavily last time out but were looking to get the better of the highly respected Cardiff ultimate Frisbee team.
Thomas’ side started the better of the two teams; a long cross field pass was caught by Max Allars mid-air to give Swansea an unexpected lead.
Swansea doubled their lead shortly after when captain Thomas got on the end of a flick around the Cardiff line.
Cardiff came back at them thanks to the performance of their key danger man Rhys Evans.
His positioning helped Cardiff take control of the game and take the victory.
Swansea University 1sts 6-15 Cardiff University 1sts