Arsenal are fully up and running in pre-season, with two friendlies now under their belt including their first exhibition match of the summer. Last Saturday, the Gunners ran out 2-0 winners over Leyton Orient in a behind-closed-doors friendly at the Sobha Realty Training Centre. And in the early hours of Thursday morning, Arsenal contested their first friendly of their United States tour, overcoming Bournemouth in a penalty shoot-out. Fabio Vieira opened the scoring in the 18th minute, volleying in at the back post after being picked out by Reiss Nelson. Antoine Semenyo equalised in the 73rd m…