Mar 20, 2013, 3:15 PM EDT
Harrell was better last season, with a 3.76 ERA in 194 innings compared to a 4.65 ERA in 168 innings for Norris, but Norris has been with the Astros for four seasons and that makes him the longest-tenured member of the rotation.
Along with announcing Norris as the Opening Day starter the Astros also announced that Jordan Lyles will begin the season at Triple-A, which was the speculation two weeks ago because he was getting knocked around in spring training.
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