The Twins announced today they've designated lefty Tyler Robertson for assignment, while selecting the contract of outfielder Clete Thomas. Thomas gives the Twins another center field option while Wilkin Ramirez recovers from a concussion, notes Phil Miller of the Minneapolis Star Tribune.
Robertson, 25, made 40 appearances out of the Twins' bullpen last year as a rookie. This year he made a couple of April appearances before being optioned to Triple-A, where he compiled a 3.05 ERA, 8.7 K/9, and 7.0 BB/9 with no home runs allowed in 20 2/3 innings. It's the worst walk rate Robertson has posted at any level.
The Twins drafted Robertson out of high school in the third round in '06, a round notable for other big leaguers such as Joe Smith, Brennan Boesch, Jason Donald, and Zach McAllister. Prior to the '07 season, Baseball America wrote that Robertson's "stuff is already solid average, with a 90-91 mph fastball that touches 94 and good curveball with depth." Despite inconsistent velocity in the years that followed, the 6'5" lefty rose up the ranks of Twins prospects and was praised for his makeup before moving to relief in 2011. He currently works at 85-88 miles per hour, according to BrooksBaseball.net. Robertson's father, Jay, is employed as a scout for the Nationals.