#2 Individual Errors costing Arsenal
Since the start of last season, Arsenal has produced 15 errors leading to goals, the most of any side in the Premier League in that period. In this game, Arsenal produced two of those errors, continuing their trend of shambolic defending. As described earlier, the first goal they conceded came through Sokratis' incompetent decision making. The second, however, came through the rashness Arsenal fans were forewarned about in regard to David Luiz.
The Brazilian was left for dead by Roberto Pereyra before sticking out a leg to bring down the Argentinean in the box. And with that, Arsenal gave away their third penalty of the season, ultimately costing them two points. Many have pointed a finger to Emery’s tactics but at the end of the day, both of Watford’s goals came through errors from his players.