Real Madrid's 2-0 win over Getafe on Sunday night was watched by 48,446 -- the lowest turnout since their last match before Cristiano Ronaldo's arrival in 2009.
La Liga's decision to play the game at 10:15 p.m. local time is likely to have affected the attendance, meaning the game did not end until after midnight, and there has been speculation over what effect Ronaldo's departure would have on the club.
The game saw the lowest Bernabeu attendance since May 2009, when Real Madrid were beaten 3-1 by Mallorca during a run of five defeats in a row to end the season under former Tottenham manager Juande Ramos.
New Real Madrid coach Julen Lopetegui hailed the performance of Gareth Bale after the Welshman scored one goal and created another in his team's 2-0 win.
Bale's cross was headed in by Dani Carvajal for Real's opening goal in their first match of the new campaign in La Liga, and he later scored his side's second at the Santiago Bernabeu.
"I was pleased with the team in general and Gareth put in a great performance," said Lopetegui, who also saw Bale head against the crossbar early on.
"Bale offers us solutions. He played well, like many of his teammates."
With Cristiano Ronaldo having left for Juventus, and with no big signings made to replace the Portuguese superstar, Bale played in a front three along with Karim Benzema and Marco Asensio.
Lopetegui added: "In the structure that we are trying to create, there are players with different characteristics and Gareth has his own.
"He gives us something different and we need to take advantage of that. We are delighted with how it's going."
Lopetegui has replaced Zinedine Zidane on the Real bench and faces a big job to carry on from the Frenchman, who stood down after leading the team to a third consecutive Champions League triumph.
The former Spain coach's first competitive game at the helm ended in a 4-2 defeat after extra-time against Atletico Madrid in the UEFA Super Cup in Tallinn last Wednesday.
But Sunday's match against a modest Getafe side allowed Lopetegui to get off to the perfect start in La Liga.
"We still have a lot of room for improvement, like all teams at this time of year, but we showed intensity, good team spirit and we managed to win and score goals against a team who are well organised defensively."
Real's next outing is away at Girona next Sunday evening.