Atlético Madrid, Barcelona and Napoli built on their matchday one wins on a night when Celtic and Manchester City played out a thrilling draw and Rostov gained their maiden point.
UEFA Champions League latest
- Manchester City come back three times to hold Celtic, Cavani spearheads Paris turnaround
- Barcelona rally to win 2-1, Carrasco drive sinks Bayern, Beşiktaş pegged back
- Arsenal's Walcott and Napoli's Mertens hit two in wins, Poloz double earns Rostov point
- Round-up: Two out of two for Atlético, Barcelona and Napoli
- Watch highlights of Wednesday's games