The fight is said to have taken place just before the EURO 2020 final between Italy and England began.
The source told The Sun: “Tensions had got a bit heated near to where Zara and Mike were sitting because it had got quite crowded.
“Two fans ended up in a punch-up and Mike had to step in to save the day.
“He stood between them and pulled them apart before stewards could get them under control.
“Unfortunately some blood ended up near Zara and she had to use a tissue to mop it up.
“It was absolute mayhem. Wembley were very lucky Mike was able to take control of the chaos.”
Wembley Stadium descended into chaos shortly before the final started as large groups of ticketless fans tried to force their way past stewards to watch the match in person.
Zara and Mike weren’t the only royals in attendance at the EURO 2020 final yesterday.
Prince William, Kate and Prince George were also in attendance.
Much like during the round of 16 game against Germany, Prince George donned an outfit matching with his father.
The seven-year-old Chelsea and England supporter wore a buttoned up shirt, blue suit and striped tie, similar to the Football Association tie wore by the Duke of Cambridge, president of the organisation.
The third in line to the throne was spotted celebrating with his parents after England scored in the second minute of the first half of the game.
Following the penalties, which crowned Italy the tournament’s champion, Prince William was seen placing his hands reassuringly on the shoulders of his son.
The Duke of Cambridge conceded victory in a personal tweet shared on his and Kate’s Twitter account.
He wrote: “Heartbreaking. Congratulations @Azzurri on a great victory.
“@England, you’ve all come so far, but sadly this time it wasn’t our day.
“You can all hold your heads high, and be so proud of yourselves — I know there’s more to come.”
Prince William signed off the message with a ‘W’.
The Tindalls were spotted in south London on Friday, the day before Kate left self-isolation to attend the Ladies’ Finals.
Kate, an avid tennis fan and patron of the All England Lawn Tennis and Croquet Club was at SW19 also yesterday to watch the Gentlemen’s Finals.
While William was absent, the Duchess was in the company of her father Michael Middleton.
Source: EXPRESS CO UK