Joel Campbell brace as Arsenal rout Viking; Tottenham destroy Inter Milan

Joel Campbell and Alex Iwobi scored twice as Arsenal breezed to a 8-0 win over Norwegian side Viking FK on Friday, while Theo Walcott also netted his first goal of the preseason.

The Gunners led 1-0 at the break and then pulled away with four goals in a 10-minute span early in the second half as their Norwegian opponents crumbled.

Campbell opened the scoring when he slid in to steer Mohamed Elneny's goalbound header into the net in the 33rd minute, then made it 5-0 with a hard strike that went in off the underside of the crossbar.

With Arsenal playing Manchester City in Gothenburg, Sweden, on Sunday, Arsene Wenger rested most of his first-choice players but was still able to enjoy a comfortable victory.

Alexis Sanchez and Aaron Ramsey didn't dress for the game after only returning to training this week, but are likely to feature against Man City as Wenger tries to get them ready for Arsenal's season opener against Liverpool the following Sunday.

Centre-back Gabriel Paulista was back after missing the team's U.S. tour with tonsillitis, signalling that he should be fit for the Liverpool game as the Gunners cope without long-term absentee Per Mertesacker.

Tottenham Hotspur's Premier League preparations stepped up a gear as goals from Harry Kane, Erik Lamela, Dele Alli, Vincent Janssen and Shayon Harrison helped them to an emphatic 6-1 win over Inter Milan in Oslo.

Both teams named strong starting line-ups for the game at the Ullevaal Stadion and there was a competitive edge to an exciting first half.

Spurs took the lead in fortuitous circumstances when Inter full-back Cristian Ansaldi was adjudged to have fouled Kyle Walker inside the penalty area, despite having the ball in his possession at the time.

It was a questionable penalty to say the least, but Kane made it count with an emphatic finish from the spot with just five minutes on the clock.

Spurs made a number of changes at the break and one of those, summer signing Janssen, did well to tee up Alli for Spurs' third, before Kane lashed in his second of the game on 57 minutes.

Inter's commitment to the game evaporated as the second half progressed and Spurs began to run riot, with Janssen adding a fifth with a tidy finish into the bottom corner when one-on-one with Samir Handanovic.

And there was still time for some icing on the cake when youngster Harrison, off the bench as a substitute, tucked home Lamela's unselfish cut-back for his first senior goal.

Lamine Kone scored a second-half goal for Sunderland to help the Premier League side draw 1-1 with Borussia Dortmund in a preseason friendly in Austria.

Nuri Sahin's shot from just outside the penalty area in the 17th minute was deflected into the goal to give Thomas Tuchel's side an early 1-0 lead.

Dortmund dominated possession in the match, but Sunderland dug in on defence to keep the Bundesliga club to just one goal and extend the their five-game unbeaten run in preseason.

Tuchel's team beat Manchester United 4-1 to kick off the International Champions Cup before losing to Manchester City on penalty kicks six days later.

Dortmund play Bayern Munich in the German Super Cup on Aug. 14, while Sunderland begin their Premier League campaign away to Man City on Aug. 13.

In a Premier League-La Liga friendly, promoted Burnley drew 1-1 with Real Sociedad.

Andre Gray scored a late goal for the Clarets -- his ninth tally in six preseason games -- to level terms after Raul Navas had headed La Real in front in the first half.