I have to go with Marlin.
Softball has had sustained success over a longer period of time, so while the WCWS was unexpected this year, it certainly wasn't a shock when they made it (They hosted the Super Regional, so it is not like they were a Cinderella by any means).
Basketball though, that is a different story. What Marlin has done with that team has been nothing short of HUD-esque. I feel like Marlin is on the verge of bringing back Louisiana basketball to the prominence it once had in the community.