Chelsea defender Cesar Azpilicueta has described his side's pulsating 2-2 draw at Swansea City as a "huge disappointment".
The Blues took the lead in the 18th minute through Diego Costa, but a Gylfi Sigurdsson penalty and Leroy Fer strike in the space of three second-half minutes turned the game on its head.
Costa scored again in the 81st minute to help his side to a point, but Sunday's result means that Antonio Conte's charges have lost their perfect start to the season.
Azpilicueta told Sky Sports News: "It's a huge disappointment because we had control of the game for most of the time. We came here to get three points and to go away with one is disappointing."
The Spaniard also praised his brace-scoring teammate, adding: "Diego Costa's work is reflected in the game. When he is scoring goals we are doing the right things."
Chelsea sit second in the table following the game at the Liberty Stadium.
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