The Welsh faithful at the Principality Stadium were left seething on Saturday when a pitch invader denied the hosts what could have been the match-deciding try against South Africa.
The Springboks trailed for much of their autumn Test against Wayne Pivac's side, but a late score from replacement hooker Malcolm Marx saw the reigning world champions triumph 23-18.
Wales will feel resentful that they could (or should) have won, however, had substitute Liam Williams not been impeded when he blazed down the left wing with around 15 minutes to play.
The score was tied at 15 points apiece when the hosts found the Scarlets star in space on the flank, but Williams was forced to check and spin mid-catch in an effort to avoid the errant spectator.
It was a manoeuvre deserving of praise in itself considering he didn't even blink gathering up Johnny McNicholl's pass, but it afford South Africa just enough to reorganise in defence to clear their lines.
Centre-turned-winger Jesse Kriel left the Springboks exposed after rushing up out of his line, leaving Wales in a two-versus-one overlap that looked destined to end in a try.
Williams and his fellow Welshmen were clearly incensed by the fan's intervention, but referee Paul Williams' hands were tied as the hosts were left to settle for a penalty.
Do you think Wales would have won had Liam Williams scored in the 64th minute? Let us know in the comments section.
Dan Biggar duly converted to put Wales back ahead 18-15, but those proved to be the last points scored by Pivac's men, and it was eventually Marx who went over for the game's only try.
Principality Stadium manager Mark Williams said of the incident after the game: "We condemn this type of behaviour in the strongest possible terms. He was intercepted and immediately escorted from the stadium and handed over to South Wales Police."
Boos rang around the Principality as the pitch invader was led away from the field by security, who could have done with reaching their target before he had a chance to influence the game.
It's unclear as to which team (if either) the spectator was supporting, although it's difficult to imagine many Wales fans who will welcome him with open arms following Saturday's debacle.
Many supporters agreed that while it was an unfortunate spin on events, the Cardiff hosts still deserved to lose in a game where the might of South Africa's pack was once again clear for all to see.
The Springboks were relentless at the scrum and around the breakdown, with the kicking team of Handre Pollard (12 points), Frans Steyn (three points) and Jantjies (three points) making the difference from the tee.
Head coach Jacques Nienaber's side are back in action next Saturday when they hope to extend a streak of six straight wins against Scotland at Murrayfield.
Wales will play host to Fiji the following day, where among their other priorities, tightening the security lines at the Principality may be the most essential of all.
