It might not be what you expect a football player to be doing now that the Superbowl is over and another champion has been crowned.
However, NFL Linebacker and Ventura County-native Cassius Marsh is opening a unique store in his home town - trading cards.
As the finishing touches are being done at this unique Ventura County store, inside - and taking up quite a lot of the space - is the owner, 6ft 4in, 269lb NFL linebacker Cassius Marsh.
Marsh has played four seasons in the NFL, most recently finishing the season for the Pittsburgh Steelers.
He grew up in the area and attended Oaks Christian School in Thousand Oaks.
It may be a niche market, but Westlake Village-native Marsh is using his free time this off-season to open Cash Cards Unlimited, a storefront/ecommerce-based marketplace to buy, sell and trade Magic: the Gathering, Pokémon and sports playing cards.
"The store is a passion project for me. It's turned into something with the potential to be a huge business because of what the trading card market is doing, but I've been into trading cards since I was a young kid," Marsh told KCLU.
Marsh says he first found the game when he went to a Simi Valley store when he was 11-years-old and saw folks playing Magic: the Gathering.
He describes the game as "fantasy-world type stuff...a mix of Harry Potter...Dungeon and Dragons Marvel...everything nerdy really," with a huge worldwide following.
He admits that as a "natural competitive person," he was drawn to the game play, but also admires the art-work on the cards.
A big part of his plan is to bring this fanatical community into the mainstream – and it's hard to imagine there’s much that manages to stand in his way.