The phenomenon -- which has led to T-shirts and tweets -- was started by Descalso during the regular season. He started employing the fashion statement for Sunday day games and eventually coined the phrase "High Socks Sunday." Jay adopted the look, too, and the pair began to actively use the hashtag #HighSocksSunday on their Twitter accounts to spread the word.
"The stripes are cool and are a tradition that they've had in St. Louis for a while," Descalso said. "You don't see them too much, so we've tried to bring back that old-school look. We've just been having fun with it."
Descalso, Jay and Skip Schumaker are among those who have been fervent in keeping to the Sunday fashion this year. Others -- including Adam Wainwright, Chris Carpenter, Yadier Molina and Tony Cruz -- have joined in from time to time.
Participation grew last month when manager Mike Matheny also gave in, and the Cardinals haven't lost on a Sunday since. He noted before Game 1 of the National League Division Series that he'll continue to wear the high socks on Sundays this postseason, even though he isn't all that keen on the look.
"They told me about it and I said, 'I'm in,'" Matheny said. "I'll respect our guys and do it."
Whether willing participant or not, all the Cardinals' players now have shirts with the mantra #HighSocksSunday printed on the front. Those were courtesy of Jay, who had a friend in Miami design the outerwear.
Jay might need to order one more, however, as the delivery apparently came one T-shirt short.
"No shirt [for me] yet," Matheny joked. "I'll have to follow up on that."