the championship side go into the second leg with a slight advantage after hayden hackney scored the only goal at the riverside stadium. chelsea manager mauricio pochettino could only watch as his side missed chance after chance in front of goal. winger cole palmer was particularly dishearted after failing to capitalise on three golden opportunities to score. after the match, middlebrough head coach michael carrick said he was pleased, but that it would be a different story at stamford bridge, while pochettino acknowldeged it was only half time, and that his side couldn't so wasteful in the second leg. i think we made some mistake in the first half, we are punished for that. we created big chances, and we were not clinical enough, that is so clear. other games, you can maybe talk in different ways. we have 15 days, two weeks, we are going to have the second tie and be positive