SEATTLE -- It was only a matter of time before the Mariners let top prospect Taijuan Walker try his stuff at the Triple-A level. Seattle made the call Friday, promoting the right-hander from Double-A Jackson to Triple-A Tacoma, where he will start Tuesday.
Walker has been showing that he's ready for the promotion for some time, boasting a 2.46 ERA in 84 innings for Jackson. His 96 strikeouts were the second-most among all Double-A pitchers, and his 1.05 WHIP was ninth-best. In his final start, the 20-year old struck out a career-high 12 batters in 6 2/3 innings.
Walker has been regarded as one of the Mariners' best pitching prospects since they selected him 43rd overall in the 2010 First-Year Player Draft.
He is the fifth-ranked prospect in all of baseball, according to MLB.com.
Jacob Thorpe is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.