About six years ago, a CESA Premier (heck, it could have been a St. Giles team) played in the Raleigh (CASL) Shootout. They were the top seed in the SCYSA state cup and they earned the right to host the first round match versus a Discoveries U-18 team. The team from Greenville decided to play Discoveries in Rock Hill on the Friday night before the tournament. They drove up, escaped with a 1-0 win on a goal in the last five minutes (they were obviously thinking about The Shootout), and then jumped in their cars and headed back up I-85 to Raleigh.
I thought that was pretty cool (and I never heard how they did in the tournament that weekend).
I don't think you can pull this trick now because CASL requires you to play matches on Friday.