Melbourne Heart 19 game losing streak equals defunct New Zealand Knights record The full replay of Perth's clash with Melbourne Heart at NIB Stadium. Harry Kewell of the Heart looks on after being substituted out of the game during the round 14 A-League match between Perth Glory and the Melbourne Heart at nib Stadium. Melbourne Heart are praying for a slice of luck to fall their way in their attempt to avoid an unwanted A-League record. Heart's 3-0 loss to Perth Glory on Friday night extended their winless run to 19 games, the dire streak matching the mark set by the now-defunct New Zealand Knights in 2005-06. Melbourne host Newcastle next Friday night. The Heart haven't scored a goal in their past three matches, leaving interim coach John van't Schip a massive headache as he tries to turn around his team's flagging fortunes. Melbourne's wobbles in front of goal were best illustrated by Mate Dugandzic, who found himself in a one-on-one situation against Glory goalkeeper Danny Vukovic, only to fire his shot wide. Van't Schip, who returned to the job following the sacking of John Aloisi two weeks ago, said his team needed to start nailing their chances. "We work a lot on finishing," van't Schip said. Heart coach John van't Schip looks on during the round 14 A-League match between Perth Glory and the Melbourne Heart at nib Stadium. In the end, if you are getting those sorts of chances, you have to put them away. The boys get trained and paid for that. But we need that little bit of luck. That's what I said to the boys as well - luck is something that you deserve. If you play in a certain way, then I think the luck will turn. But you have to improve. Van't Schip said his team couldn't afford to waste their energy thinking about their record losing run. "I'm not thinking about that at all," van't Schip said. You can only control the things you are doing on the pitch. Whatever everyone's saying and writing - that's something you can't control. Heart striker Dylan Macallister will miss Friday's match against Newcastle after being sent off against Perth. Macallister received two yellow cards within the space of 11 minutes after replacing Harry Kewell in the 70th minute. Van't Schip said there were a variety of reasons behind his decision to sub Kewell. "He got two kicks on his shin and calf and he was tired," van't Schip said. He played 90 minutes last week. It was a short turnaround, a heavy trip. So we saw that he was - I thought - empty.