Graveman was named the Opening Day starter for the A's on Thursday, Susan Slusser of the San Francisco Chronicle reports.
With regular ace Sonny Gray (lat) sidelined for the start of the season, Graveman will take the mound on Opening Day for the A's. The 26-year-old posted a 4.11 ERA and 1.31 WHIP across 184 innings (31 starts) last season with the A's.