MLB.com’s Greg Johns has the status update …
Good news from Taijuan Walker today as the youngster threw a 40-pitch bullpen session and said he felt great. Walker is likely a couple weeks still from throwing in a game and a few more from being Major League ready, in the best-case scenario, but the fact he’s on the mend and throwing well is welcome news.
Walker will open the season on the 15-day disabled list but should be able to join the Mariners’ starting rotation by the end of April. The 21-year-old posted a promising 2.93 ERA, 1.196 WHIP, and 10.2 K/9 in 141 1/3 innings last season between Double-A Jackson and Triple-A Tacoma. He then debuted at the major league level in August.
Walker was rated the eighth overall prospect in the game earlier this spring by Baseball Prospectus.