Arsenal beat Swansea 2-1 at the Emirates Stadium on Saturday afternoon to put the pressure on Tottenham in the Premier League. The Gunners moved to within a point of their north London rivals and leapfrogged Chelsea who are scheduled to player later today.Although it was the Swans that took the lead through Sam Clucas in the first half, the Gunners roared back in the second half with goals from Sead Kolasinac and Aaron Ramsey to win all three points.Here are the major talking points from the game.#1 Arsenal fail to capitalise on early dominance yet againSwansea stood firm in the first half, denying Arsenal a number of chances on goalJust as in the Everton game last weekend, Arsenal started the game strongly. It was pedal-to-the-metal football as Swansea sat back and absorbed the pressure - their 3-5-2 automatically collapsing into a 5-3-2 off the ball.However, with no space to manoeuvre in the final third, the likes of Alexis Sanchez and Alexandre Lacazette were crowded out - especially inside the box.But in the first 20 minutes, the Gunners did have as many as five shots on goal. By the end of the half, they had seven shots of which only two were on target with three shots blocked.The chances were there but they weren't as clear-cut as they would have liked. Alexis Sanchez, Aaron Ramsey and even Hector Bellerin had shots which were blocked while Per Mertesacker's header from a set-piece was saved.In contrast, Swansea capitalised on their first shot on goal.