They did play polo and never pretended to give out cups, what are you on about. It's the desperation that is baffling.
I suspect some disingenuity here, but for those to whom this means nothing, on the 31st of May 2022, Prince Harry’s polo team, Los Padres, won the final of the competition for the Lisle Nixon memorial trophy at Santa Barbara Polo Club. Here’s the page from the US Polo’s website summarising the final with some nice pictures of the trophy presentation:
www.uspolo.org/news-social/news/lisle-nixon-memorial-recap
A week earlier, on the 23rd of May, Los Padres had played the last of their pool matches, and Meghan came to watch the game. Los Padres also won that match, to advance to the semi final. Somewhat strangely however, they had a victory ceremony where they were presented with the Lisle Nixon Memorial trophy, despite it being a week and another two matches before they would actually win it.
Here are photos of the “real” trophy presentation, and the one with Meghan a week earlier. Unsurprisingly, people found this somewhat strange behaviour. It has been speculated is that the match when Meghan was present was filmed for their Netflix show.