After selling a rare Pokemon card for almost $700,000, NFL linebacker Blake Martinez has decided to get into the card-selling business full-time.

The Las Vegas Raiders player has announced his retirement from professional football at the ripe old age of 28. He says he’s been making so much money selling Pokemon cards, he doesn’t need his income from the NFL anymore. “I have chosen to step away from this career at this time to focus on my family and future passions,” Martinez says.

The announcement comes two weeks after Martinez sold an ultra-rare Pokemon “Illustrator” card, which carried a 9.5 “Gem Mint” quality rating.

What’s the most valuable trading card you’ve had your hands on?

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