Seattle Mariners outfield prospect Jonatan Clase was recently called up in replacement of the injured Dominic Canzone, who has been placed on the 10-day IR after hitting a wall in left field. While we aren’t sure if Clase will remain on the big league roster or if this is a quick cup of coffee, his market has seen healthy growth in certain areas. With Clase pitched briefly several months ago as a flier play, we wanted to ensure our listeners that may have tailed this play know how and when to list their Jonatan Clase cards. Let’s dive in.