After rediscovering his form with a stroke-filled half century, Yuvraj Singh ( 57 off 44 balls) rued that his team Delhi Daredevils could not deliver the knock-out blow on the Mumbai Indians despite reducing the hosts to 40 for 4 and lost the crucial IPl cricket game. "We had them (reeling) at 40 for 4. We should have won the game from there, but we didn't pick up wickets," said Yuvraj at the post-match presser after MI won by five wickets with three balls to spare at the Wankhede Stadium here. "I think after the rain came, the dew set in and the wicket got better. There was no spin. I think it worked to their advantage. No doubt they played well. But from 40 for 4, you should win games from there," he added.