SAM Long says the visit of Plymouth Argyle could be the toughest test yet this season for Oxford United.

The Devon side sit top of Sky Bet League One and face United while in their highest league position since they were relegated from the Championship in May 2010.

The likes of Wigan Athletic, Rotherham United and Sunderland – who were due to play the U’s – all had matches postponed due to international call-ups last weekend with Argyle taking full advantage by going top.

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Long said: “They were a good side last year and didn’t get as many results as they probably should have.

“They’ve capitalised on certain teams not playing at the weekend and gone top of the league.

“It will be a tough game but hopefully we can come out on top.

“I’d say they’ve been the toughest test, they’re top of the league for a reason.”

The quality of the opposition doesn’t faze Long though, who said United believe they can win every game.

“We go into every game thinking we can win,” he said.

“If you have that attitude going into games, it’s important because if you don’t believe you can win, there’s no point in being out there.”