UCL match day continued on Wednesday

How unusual was this? Two 0-0 draws after just 12 of 144 games to be played in the new league phase is already halfway to the total of four in 96 games one year ago in the group-stage format that is now abolished. The entire competition averaged three goals per game last season.

Paris Saint-Germain and Girona also were heading for a blank until a horrible 90th-minute error by the Spanish debutant's goalkeeper, Paulo Gazzaniga - spilling a cross by Nuno Mendes through his own legs - gifted a 1-0 win.

Borussia Dortmund needed late goals from substitutes Jamie Gittens, twice, and Serhou Guirassy with a stoppage-time penalty to win 3-0 at Club Brugge.

The new format has welcomed new faces and long-absent friends in European soccer's marquee competition.

Sparta Prague rose to the challenge of its first game for 19 years at this stage of the Champions League by beating Salzburg 3-0.

Bologna waited 60 years to return and deserved more for its attacking ambition against Champions League veteran Shakhtar. The Ukrainian champion had a penalty saved in the fourth minute by Bologna goalkeeper Lukasz Skorupski.

Slovan Bratislava was overmatched in its first game since 1992-93, the first season of the Champions League rebrand from the old European Cup, and with Georgia defender Guram Kashia making his competition debut at age 37.

They could not keep out Celtic, which won 5-1 in Glasgow. Ireland internationals Liam Scales and Adam Idah, Japan forwards Kyogo Furuhashi and Daizen Maeda, and Arne Engels of Belgium scored for the champion of Scotland.

A rare Thursday slate of Champions League games will see Barcelona go to Monaco, Atalanta host Arsenal and Bayer Leverkusen visit Feyenoord.

Six games on each of three straight nights are launching the new format. Now, 36 teams each play eight different opponents through January and are ranked in a single league table to decide which teams advance to the knockout phase.