The top tier of Wembley was closed for the match, which Tottenham won 1-0, and 43,268 supporters were in attendance. The capacity of Wembley is 90,000, but Spurs insisted almost all available tickets were sold.
Spurs issued advice on September 4, which read: “Given the restriction on the number of events that can be staged at full capacity at Wembley Stadium, and with our game against Manchester City on October 29 and all three of our group stage Champions League matches planned at full capacity, supporters are advised that our game against Cardiff City on October 6 will be limited in capacity.”
Spurs have hosted home games at Wembley and in Milton Keynes this term as they await the overdue completion of their White Hart Lane home.
Mauricio Pochettino was unaware of the restrictions, and speaking after the game said: “Me? yes. I was little bit surprised it was empty.
“But I understand that this is so difficult. We cannot ask for more from our fans. Of course it was a difficult day, the weather and everything, it’s not easy.
“But yes, I am always honest and I was a bit surprised at the upper tier being empty.”
Cardiff manager Neil Warnock added: “I didn’t really notice, I was focusing on our fans.
“I don’t think we could have brought any more so you can’t blame us.”
Spurs twice broke the Premier League’s attendance record last season with games against Manchester United (81,978) and Arsenal (83,222).