Mariners' top prospect Walker returning to rotation

Mariners' top prospect Walker returning to rotation

ANAHEIM -- Top Mariners prospect Taijuan Walker will move back into the starting rotation Friday against the Astros, as rookie southpaw Roenis Elias is likely done for the season after experiencing elbow problems.

Elias will fly back to Seattle on Thursday to have an MRI exam on his left elbow after being removed in the fourth inning of his Tuesday start against the Angels.

The Mariners announced after Wednesday night's 5-0 loss to the Angels that Walker will now start Friday, which allows Chris Young and Hisashi Iwakuma to be pushed back a day to Saturday and Sunday, respectively.

Elias originally was slated to start Sunday, but he has been diagnosed with tightness in the flexor bundle in his elbow, with more information expected after the 25-year-old returns to Seattle.

Greg Johns, a journalist in the Seattle area for more than 20 years, began covering the Mariners for MLB.com in November 2010.

This story was not subject to the approval of Major League Baseball or its clubs.