Arsenal, Lyon get second wins, Porto stun Chelsea

• Arsenal and Lyon have maximum points after two games
• Leverkusen, winners on matchday one, equalise with a minute left in Barcelona
• Porto, from 3-0 down, restrict Chelsea to their first UEFA Youth League draw in 20 games
  
• The Domestic Champions path started with two first round first legs

Group E
BATE Borisov 0-0 Roma
Roma followed up their goalless draw against Barcelona with another stalemate, this time in Belarus. Roma's Christian D'Urso spurned the best chance of the first half, firing over when one-on-one with Denis Scherbitski, while Ilya Kukharchik did likewise for the hosts after the break. Scherbitski was called into action again to save close-range efforts from Ezequiel Ponce and Sadiq Umar. 

Barcelona 1-1 Bayer Leverkusen
Substitute Paul Gemein headed an 89th-minute equaliser for Leverkusen from Jonas Carls's floated left-wing cross. The German side had fallen behind to an opportunistic Eric Montes shot, which came from a corner awarded after Tomasz Kucz had kept out Juanma García's spot kick. Barcelona, winners in 2014, had Oriol Busquets dismissed in added time.

Group F
Arsenal 3-2 Olympiacos
Arsenal lead the group with maximum points after this dramatic victory. The Gunners trailed to Giorgos Manthatis's early strike but led 2-1 four minutes into the second half when Ben Sheaf calmly tucked away a penalty, given after Kostas Plegas fouled Kaylen Hinds. Thanasis Androutsos swiftly drew Olympiacos level with a super volley, only for Julio Pleguezuelo to win it for Arsenal with his second of the match from a Sheaf corner.

Bayern München 1-2 Dinamo Zagreb
The impressive Josip Brekalo was fouled for the early penalty that Ivan Božic converted to open the scoring and then doubled the Dinamo advantage himself (18) after being set up by Bojan Kneževic. Bayern's Marco Pfab (52) and Dinamo defender Branimir Kaliaca (81) were sent off, with Michael Strein's direct free-kick six minutes from time nothing more than consolation for the point-less hosts.

Group G
Maccabi Tel-Aviv 1-1 Dynamo Kyiv
The Israeli outfit picked up their first UEFA Youth League point, Gavriel Kanichowsky's splendid 24th-minute finish cancelling out Bohdan Mykhaylichenko's opener for Dynamo. Or Dasa had a great opportunity to clinch it but missed an inviting 65th-minute chance for the home side.

Porto 3-3 Chelsea
Porto stormed from 3-0 down to earn an impressive point against the holders. Chelsea were cruising after goals from Kasey Palmer, Josimar Quintero and Kyle Scott inside 26 minutes, but João Cardoso pulled one back from the spot before the interval and in the second half Porto were a different team. Belgian Tony Djim soon made it 3-2 and after Palmer was sent off, Rúben Macedo's excellent half-volley completed the comeback.

Group H
Zenit 0-1 Gent
Visiting captain Jeff Callebaut got the only goal on 50 minutes, though it took a substantial deflection for his attempt to wrong-foot goalkeeper Mikhail Kizeev. Artem Vodyannikov blasted wide from an Ilya Kubyshkin centre in added time as Zenit squandered a great opportunity to snatch a draw, with Dante Walen similarly profligate at the other end from the resulting break.

Lyon 1-0 Valencia
Lyon, like Arsenal, have six points. Yoann Martelat's goal was decisive, the midfielder stabbing low into the net from close range after Valencia failed to clear. That came after visiting captain Javier Jiménez had rattled the woodwork early in the second half, while Lyon's Florian Ankoué and lively team-mate Romain Del Castillo were denied by the frame of the goal with 12 minutes left.