Brad Thompson has chosen to become a free agent after clearing waivers, according to Bob Dutton of the Kansas City Star (via Twitter). The Royals designated Thompson for assignment when they claimed Kanekoa Texeira off of waivers last week.
Thompson, 28, has a 6.41 ERA in 19.2 innings this year with 4.6 K/9 and 1.8 BB/9. Before this season, the right-hander had spent his entire career with the Cardinals, the team that drafted him in 2002. In five seasons with the Cards, Thompson posted a 4.36 ERA in nearly 400 innings as a swingman. The Royals signed Thompson this winter after the Cardinals released him.