Such is Nadal's longevity he is now frequently coming up against players who idolised him as children.
Ruud, 23, is one of those, having been in the crowd when Nadal won his eighth title, against David Ferrer in 2013.
The Norwegian also trained at Nadal's academy in Majorca, regularly playing practice sets with his hero.
This was their first competitive meeting, although the first set had all the intensity of a knock-about in the Spanish sun.
It was a rude awakening for the underdog when he was broken straight away, and although Nadal let him off the hook with a loose service game, the opening set was soon in the bag.
A double fault gave Ruud a break to love for a 3-1 lead in the second, but he was unable to press home the advantage as Nadal dipped into the energy reserves to hit straight back.
When a forehand winner zipped down the line to bring up set point, Ruud shook his head in despair, and promptly double-faulted to give Nadal a 2-0 lead.
Little went right for Norway's first male singles grand slam finalist, and when he feathered a simple volley into the net Nadal was two breaks up in the third.
In the end it was a procession, with 'Viva Espana' blaring out from a band in the stands as Nadal added the Roland Garros trophy to the Australian Open he won earlier this year.
Whether his ageing, ailing body allows him to collect any more remains to be seen.
