Rumgay had levelled the match against his Canadian rival at two sets all after training 2-0 and his response to this was to grab his shorts, show his pants and give himself an impromptu wedgie. The Scot then completed a spectacular comeback to win the match. Upon winning the game, the 29-year-old proceeded to roll on the ground before leaping up to dance to The Proclaimers' song '500 Miles'. Rumgay was reprimanded for his actions, receiving a warning and a yellow card - but he did not seem unduly bothered by the rebuke. He said: "Table tennis is like Tourette's - once something happens on the court you have to continue it. I'm just in the zone and it happened. It's a funny yellow card."
The Scot began his men's singles campaign last night, beating Canada's Andre Ho to move into the last 16. His reaction to that victory may have been a tad less exuberant, but there is little doubt what it means to the Scot to win for his country at a home Commonwealth Games.
That Rumgay received a warning at all for his unique celebration is something of a mystery. While his reaction may have been out of the ordinary, it surely caused little offence and it can be argued that flashes of personality are required to keep sport entertaining.
The celebration did more than merely provide some entertainment for the fans, though. The Scot may not have been playing for a medal but to him, that did not matter. Rumgay has trained just as long and just as hard as the athletes who competed in the medal matches last week.
The stories of athletes who have made countless sacrifices just to be at Glasgow 2014 are endless. Rumgay, the Scottish number one, trains twice a day but receives little funding so has been forced make a considerable commitment in order to continue at an elite level. Stories like his could perhaps be forgotten amid the record-breaking haul of medals Team Scotland has so far amassed at these Games.
And that's why an outburst like the Scot's wedgie celebration will, for me, be forever welcome. In those few seconds, Rumgay showed how much it means to represent Scotland, what it means to win for Scotland and just how much of a release is needed in elite sport. The Scottish table tennis players may be unlikely to add to the Scottish medal tally, but the value of their individual victories cannot be overstated.