New Delhi: Deccan Chargers coach Darren Lehmann on Wednesday admitted that poor bowling in the death overs had cost his team two wins in the Indian Premier League (IPL) but said that the players were working hard on executing their plans.As Deccan gear up to face Delhi Daredevils here on Thursday and hope to end their three-match losing streak, Lehman said: "Its disappointing we haven't closed the two games out, we should have won against Mumbai and in Jaipur we gave 25 runs or so in the last couple of overs. The last two or three overs have cost us two wins but boys are training hard it's just a question of executing last few deliveries."Lehmann, a former Australian batsman, said that it wasn't an easy job bowling in the death and Twenty20 is a format that can be taxing on a bowler. "Bowling in the death is not easy, someone's going to be the winner and someone's going to be the loser. It's hard as a bowler we know that and it's hard as a batsman as well. It is just the nature of Twenty20. What we are seeing is some close fought games and a pretty entertaining IPL so far," he said.Lehman was unhappy with the Deccan Chargers' fielding standards. "We have worked pretty hard on our fielding so it was disappointing how we fielded in the last game and there's no excuse, we just didnât field well enough as a team we know that. The guys work really hard last week and it's just one of those things," he said.Talking about the schedule, the Australian felt that he would have to rely on rotation policy for some of the games to keep the players fit. The Chargers didn't play a match for eight days but will have a packed schedule for the next few games."We are fine with the schedule, it would have been nice to play a few more games but that's just the way it goes. We can't do much about the schedule, all the players are professionals and they have to get ready for each and every game, we are going to have to rotate the some of the other teams," Lehmann said."We are playing 10 games in some 22 days, that gives opportunity for someone to play well. We are not so worried about it. It's just part and parcel of the IPL."