Chelsea boss interim manager Guus Hiddink complained about a lack of sharpness in his side after their 1-0 defeat to Swansea at the Liberty stadium. The Dutch boss wasn't pleased with his side's performance on Saturday afternoon and also spoke about the club's current injury plight which was a factor in the defeat. Chelsea were average on the day but Hiddink, who suffered his first Premier League defeat since replacing Jose Mourinho in December, was happy to blood some of the club's youngsters. "Every defeat hurts but everyone knows the situation we are in, so there's a positive side to bringing in youngsters and seeing what they can do," he is quoted as saying by BBC Sport. "We defended poorly and gave Gylfi Sigurdsson a very free chance. "We were attacking, attacking, but in the final third we were not sharp enough." The Blues didn't have the likes of Willian, Eden Hazard, John Terry and Gary Cahill as they were missing due to injury and Diego Costa was suspended.