Arsenal opened the new season with a controlled, confident and quietly emphatic 3-0 win over Manchester City in the Community Shield, delivering a performance that underlined their status as Premier League holders and exposed early frailties in the first competitive match of the Enzo Maresca era. A blistering start, sharp execution in key moments and a far more secure defensive display than anything seen in pre-season carried Mikel Arteta’s side to a comfortable victory at the Principality Stadium. The tone was set inside half a minute. Myles Lewis‑Skelly, trusted from the start despite speculation around his future, clipped a perfectly weighted…