WWE legend The Undertaker makes shock appearance before Al Nassr match, Cristiano Ronaldo was loving it

WWE legend The Undertaker made a surreal appearance before the Riyadh Season Cup match between Al Nassr and Al Hilal - and Cristiano Ronaldo's reaction was picked up by cameras.

Ronaldo's high-profile move to Al Nassr last January essentially kickstarted a major transfer drive that saw a number of top stars from European football join the Saudi Pro League in the summer.

The 39-year-old's deal with Al Nassr includes outside opportunities, with Ronaldo appearing at a boxing event in Saudi Arabia alongside Conor McGregor in December.

The contract hasn't yet reached as far as WWE, although there were reports that the company was trying to secure a deal for Ronaldo to appear at their Crown Jewel event in October. However, the football legend had a match on the same day.

But the WWE do have an ongoing partnership with Saudi Arabia, which sees the country host two premium live events per year.

Even so, it was a surreal sight to witness The Undertaker, one of the biggest stars in WWE history, step out onto the pitch before Al Nassr took on Al Hilal.

The match's organisers certainly made a big deal of his arrival, with the lights dimmed before The Deadman's iconic theme song blared out across the stadium.

In fact, the entire entrance resembled exactly how The Undertaker used to enter the arena in WWE, featuring his trademark slow walk to the ring. Except this time, of course, he was walking to the centre circle.

You can watch the clip below.

Perhaps the best part of the clip was a surprised Ronaldo's reaction to seeing the WWE icon - with the 39-year-old clearly shocked to find out there was still something in football that he hadn't yet experienced.

On the pitch, though, it wasn't the greatest start for Ronaldo's side, as former Lazio midfielder Sergej Milinkovic-Savic opened the scoring for Al Hilal on 17 minutes.

The Undertaker is reportedly set to present the trophy to the winner of the match - which will certainly be worth a watch if you're a fan of The Deadman.