As a junior, Mathisen was named to the All-State Tournament team, a District 31-4A MVP, a Max Prep All-American, Perfect Game USA All-American, the South Texas Player-of-the-Year and was a member of the Texas Rangers Area Code Team.
"The Pirates are excited to add the offensive and defensive skill set of Wyatt to the organization," said DelliCarri. "He possesses the ability to be a quality catcher and a solid offensive producer from the catching position. His grounded foundation and passion for the game will serve him very well on his journey through baseball."
Mathisen has been assigned to the Gulf Coast League Pirates.