Catcher Andrew Knapp was designated for assignment on Monday after the Pittsburgh Pirates claimed catcher Tyler Heineman on waivers. The Pirates announced on Wednesday night that Knapp has cleared waivers and refused his assignment to Indianapolis, making him a free agent. With his service time in the majors, he had the option to choose free agency over the minors.
Knapp was the backup catcher for the Pirates for the last six weeks, hitting .129/.229/.161 in 11 games.