Leandro Trossard scored with his first touch after coming off the bench as the Arsenal substitute inspired a 2-0 win against Aston Villa on Saturday. Mikel Arteta's side were struggling to make the breakthrough until Belgium forward Trossard arrived with an instant impact at Villa Park. Trossard's cool finish came midway through the second half, with Thomas Partey's late strike -- aided by a howler from Villa goalkeeper Emiliano Martinez -- sealing Arsenal's second successive victory. Arsenal are off to a fine start to their latest bid to win the Premier League title thanks to this cathartic moment for the north Londoners.