Arsenal finished top of Champions League Group A thanks to a Lucas Perez hat-trick in Basel and Paris St-Germain's draw with Ludogorets Razgrad. PSG would have sealed top spot with victory, with anything less allowing in the Gunners, who took control through two Perez tap-ins. Perez drove in his third from the edge of the box and Alex Iwobi rolled in a fourth before Seydou Doumbia cut through for a Basel consolation. A 2-2 draw in Paris left Arsenal top of a group for the first time since 2011-12.