Nigel Pearson criticised the referee for denying Bristol City a clear penalty in the second half but claimed his side suffered from mental fatigue during their 2-0 defeat at Swansea.
With seven senior players out injured ahead of the two-week international break and a run of seven games in 22 days, the City manager made three changes to the side that lost at Luton on Wednesday including handing a full league debut to academy prospect Omar Taylor-Clarke in midfield while Zak Vyner was handed the captain's armband for the first time.
After surviving a spell of early pressure, the visitors fell behind through Liam Cullen on 34 minutes when his strike across goal went under the arm of goalkeeper Max O'Leary. City found it difficult to create meaningful opportunities despite getting themselves into good attacking positions.