Some eyebrows were raised once the team line up was revealed with David Luiz, Shkodran Mustafi and Granit Xhaka all starting, however, the defence did quite well in the first half and the youngsters Saka, Willock and Smith Rowe were all very impressive.
Martinez in goal had to make a few very good saves to thwart the Frankfurt front line but Arsenal had just as many chances at the other hand with some wasteful finishing from Smith Rowe and Torreira.
The game certainly flowed from one end to the other and it was Arsenal that took the lead on the 38th minute.
Kolasinac began the move feeding Saka who took off like a horse in the Derby who linked up with Willock on the edge of the area and he then decided it was goal or bust, he went by one Frankfurt player, unleashed a shot on goal that deflected over the head of the Frankfurt keeper to give the Gunners a one-nil half time lead.
I felt it was an even half but no one can begrudge Arsenal the lead, the youngsters put in a huge effort, Aubameyang did a load of good work up front, the midfield and defence were strong. No complaints about the first-half performance from the lads.
The second half started off at a blistering pace with Frankfurt determined to get an equaliser but some great defending from Mustafi and a nice save from Martinez kept them at bay.
Joe Willock, who was having a great game, went on a wicked 60-metre run to feed Aubamyenag who was unlucky not to score.
The game was ebbing and flowing with Arsenal posing a significant threat on the counter-attack, though Lucas Torreira nearly let in the Germans with some sloppy play.
In the 56th minute, a free-kick from Granit Xhaka flew over everybody and bounced off the crossbar. Frankfurt then came close two minutes later from Silva who should have done better.
Pepe replaced Smith Rowe on the 60th minute and Ceballos came on for Willock in the 73rd minute as the game started to get a bit stretched with Frankfurt mainly attacking and Arsenal looking to counter.
Frankfurt went down to ten men on the 78th minute after Dominik Kohr brought down Saka for a second yellow card and three minutes later Kolasinac, who was also on a yellow, was replaced by Ainsley Maitland-Niles, a sensible move by Emery.
Pierre-Emerick Aubameyang should have made it 2-0 but somehow missed from just three yards out, was a bad miss really but he made amends just a few minutes later knocking in the third Arsenal goal on the night after Saka had scored Arsenal’s second goal.
Saka’s goal was a beauty, it came from a quick counter, Pepe strolled down the right cut it back to the 18-year-old and bang, a lovely goal.
Aubameyang’s goal also involved Saka who stole the ball of Frankfurt’s Abraham and the ball fell nicely for the Gabon international who slotted it past the keeper.
Overall, it was an impressive performance, the defence was excellent, the midfield worked hard and the forwards did their jobs clinically.