Harris was waived by the A's to make room on their roster for today's starter, Bartolo Colon. To clear a spot in their rotation for Colon, Oakland demoted Dan Straily to Triple-A.
The A's claimed Harris off waivers from the Colorado Rockies a few days ago. He appeared in three games with the Rockies this spring -- throwing three scoreless innings with a hit, walk and three strikeouts -- after making his major league debut last season. Over 20 appearances spanning 17 2/3 innings, the right-hander maintained an ERA of 8.15 with a strikeout-to-walk ratio (SO/BB) of 3.17.
Harris spent a majority of the season with the Rockies' Double- and Triple-A affiliates, posting an ERA of 2.08 over 44 appearances spanning 52 innings with 5.08 SO/BB. The 28-year-old owns a career ERA of 2.66 with 3.99 SO/BB over six seasons in the minors.