Theo Walcott has hailed the morale of the Arsenal squad after they closed in on a top-four finish with a 4-1 win over Wigan Athletic.

Lukas Podolski’s brace plus strikes from Walcott and Aaron Ramsey were enough for Arsène Wenger’s team to secure three crucial points against Roberto Martinez’s side.

The equation for Arsenal is now simple. If they win at Newcastle United on Sunday, they will finish in the top four once again.

“It was a massive three points,” Walcott told Arsenal Player. “That's what we needed. We knew it was in our hands and it was probably a fair [scoreline] going into the second half.

It's going to be a tough game at Newcastle but we want to upset them and try to qualify for the Champions League

Theo Walcott

“We showed our quality and we managed to take our chances, and that's important. The morale is great, it always has been, and that showed with our second-half performance.

“At times we take a while to get going but to be honest Wigan played some [good] football at times. It was always going to be difficult but we managed to hold on.

“It's going to be a tough game at Newcastle but we want to upset them and try to qualify for the Champions League.”

Jack Wilshere was introduced after 78 minutes against the Latics and echoed his team-mate's sentiments.

“It's always tough against Wigan because they are fighting for survival,” he said. “They came out in the second half and gave us a real test.

"We were lucky that we got that second goal. We're delighted and now we've got a big game at the weekend and we've got to get the three points again.

“I think nerves are normal but we've been there before, we've done that final day before. We can look for our experience and try and use it. It will be a tough game but Newcastle are safe there. We know we can play our game and win there.”

Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source Nik Brumsack 15 May 2013