Unsurprisingly, Alun Wyn Jones - who today won a world record 149th test - could be seen putting his all into Mae Hen Wlad Fy Nhadau.
The clip, shared by ITV Sport, quickly went viral across social media.
You can watch the full moment here:
SOCIAL REACTION:
8 Great Things You Didn’t Know About Alun Wyn Jones
1. Position change
He was originally a blindside flanker.
2. Personal life
Jones and his wife, Dr Anwen Jones, have two daughters.
3. Rugby Nickname
In his youth, apart from having long hair, he had a pair of white rugby boots on, at a time when it was black or nothing. Second rows wearing white rugby boots was quite unusual. That’s how he got the nickname Alun Gwyn Boots.
4. Close friends
Legendary Wales prop Adam Jones was best man at his wedding.
During the Lions tour in 2017 he became one of only 7 Lions players to have beaten South Africa, AustraliaandNew Zealand while touring these countries, following the 24-21 win in the second test
His father, Tim Jones, was a respected solicitor who also played rugby for Swansea, and his funeral in 2016 drew hundreds from the legal world and rugby world.
Getting a bit emotional at Alun Wyn Jones absolutely belting out the Welsh National Anthem on his 149th appearance (a men's record). What a titan of rugby he is. #WALSCO@SixNationsRugby