In August 2020, a rookie year baseball card for Angels superstar Mike Trout sold for nearly $4 million. The modern-day card broke a record previously set by a much older rare Honus Wagner card of the early 1900s. And the eye-popping price could be surpassed again soon. Trading cards have transformed into investments, fueled by a mysterious rating system and eccentric power brokers. Dan Hajducky tells us strange stories from the world of sports cards. Then Mike Greenberg shares his thoughts on why the return of baseball meant so much in 2020.