From one captain to another, this evening's Cape Town collision represents the biggest day of their club careers.
Stormers skipper Steven Kitshoff made his debut in 2011, by which time Peter O'Mahony was a season into his time with Munster.
It was the same year that Munster last won silverware - they beat Leinster to the Magners League trophy in Thomond Park.
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O'Mahony wasn't a part of the matchday squad and doesn't accept it as a trophy won on his watch.
World Cup winner Kitshoff, on the other hand, lifted the URC trophy after the Stormers beat the Bulls in last year's final.
The 31-year-old left South Africa for two seasons with Top 14 club Bordeaux. He returned in 2017 but will once again bid farewell to Cape Town after today's game. Ulster his next destination.
"I was involved since 2011 and knockout games-wise, there were 30,000 last year for the final, there'll be 55,000 this year against one of the monsters of European rugby," said the loosehead.
"So yeah, it's possibly the biggest game for the Stormers I've ever played in.
"It's my final game for now but I can always come back and will always keep the door open. It's going to be an emotional one but it's rugby first - it's 80 or 100 minutes of rugby, then we'll take it from there."
Stormers are awake to the danger, having suffered to Munster when the reds were there in mid-April.
"It was a tough one," Kitshoff said. "We understand the threats Munster pose, we had a real deep dive into their DNA, the way they play.
