Perth Glory caretaker coach Alistair Edwards has vowed to keep chasing an A-League finals spot until his battling side is mathematically ruled out of joining the playoffs party.Glory are five points off sixth spot with five rounds to go following a 1-0 away loss to high-flying Western Sydney on Saturday night.Perth are "most definitely" still focused on achieving a finals spot, according to Edwards."We're not going to give up until it's mathematically impossible for us to get in there," he said."I think we'll get better as every single game goes, so I'm looking forward to that."One could be forgiven for thinking Perth would have a slightly softer draw over the closing rounds after what Edwards described as a personal "baptism of fire."In his first two matches in charge, Glory faced off against the top two teams.They upset the ladder-leading Mariners 2-1 in Perth before being shaded by the Wanderers.However, four of their last five games are against the teams positioned between third and sixth prior to Sunday's remaining round 22 games."We've got Sydney FC next week with (Alessandro) Del Piero and Lucas Neill, coming to Perth," Edwards said."That will be no doubt a blockbuster sellout."Then we go to Melbourne Victory, so there's no easy games in this competition and that's why I think it's great."I think it's the best A-League season that I've seen."Edwards was encouraged by a gritty performance in the loss to the Wanderers, who won their seventh straight game."I think we started to take a bit of control of midfield, particularly after the 25th minute," Edwards said."But in saying that,we've still got a long way to go, because there's a few phases in the forward area of the park we've got to get better at."Edwards said he was enjoying the challenge of coaching Glory and foreshadowed the introduction of some new blood."We've got a few exciting young players that you will see introduced before the end of the season," Edwards said.