Cardiff City defeated Sunderland, 2x0, on Wednesday, in a match relating to the Grp.H of the U21 Premier League Cup.
Rubin Colwill opened the score in the 33rd minute.
In an unfortunate moment Ben Crompton scored an own goal with 69 minutes on the clock.
In the next fixture, Cardiff City will play away against Wolverhampton, while Sunderland will host Wolverhampton.