Matchday one facts and figures

• There were landmark matches for Juventus and Bayern München as the Italian club played their 150th game in the UEFA Champions League, group stage to final, and the German side appeared for the 200th time. Both teams marked the occasion with an away win – Juve at Manchester City (2-1) and Bayern at Olympiacos (3-0)

• Olympiacos's defeat by Bayern was their 50th in the UEFA Champions League. Only Porto (51) have lost more.

• Real Madrid's record-breaking 19th successive group stage campaign (and record-equalling 20th in all) began with a victory, defeating Shakhtar Donetsk 4-0 at the Estadio Santiago Bernabéu.

• Madrid's win featured a hat-trick from Cristiano Ronaldo, lifting the Portuguese forward's all-time tally in the competition to 80 – three more than the next highest, Lionel Messi, who drew a blank in Barcelona's 1-1 draw at Roma.

• It was the third UEFA Champions League hat-trick for Ronaldo – all of them for Madrid – which puts him level alongside Filippo Inzaghi, Mario Gomez and Luiz Adriano in the all-time roll of honour. Messi, with five trebles, is the only player to have registered more.

• Two of Ronaldo's goals were penalties, and he has now converted a record 11 UEFA Champions League spot kicks. Ruud van Nistelrooy and Luís Figo are next highest with ten apiece.

• Messi made his 100th UEFA Champions League appearance in the game at the Stadio Olimpico, becoming the 26th player to reach the century.

• Meanwhile, on the same night, Iker Casillas joined Xavi Hernández on 151 UEFA Champions League appearances as the ex-Madrid goalkeeper made his competition debut for Porto in their 2-2 draw at Dynamo Kyiv.

• Rafael Benítez became the second coach to lead six different clubs in the UEFA Champions League, following his predecessor at Madrid, Carlo Ancelotti. Benítez was previously in charge of Valencia, Liverpool, Internazionale Milano, Chelsea and Napoli.

Bayern celebrate their victory at Olympiacos©AFP/Getty Images

• Three clubs made their UEFA Champions League group stage debuts on matchday one, but none won. Borussia Mönchengladbach and Astana both lost away from home on Tuesday (0-3 at Sevilla and 0-2 at Benfica, respectively), before Gent marked their entrance on Wednesday with a 1-1 draw at home to Lyon despite ending the game with nine men.

• Astana's appearance was the first in the competition proper by a club from Kazakhstan, which means that 32 of the 54 UEFA member associations have now fielded at least one club in the group stage.

• Mönchengladbach are the 11th club from Germany to participate in the group stage – the second highest number for a nation after Spain, who have been represented by 13 different clubs. Third in the list are France (ten clubs), followed jointly by England and Italy (nine apiece).