The right-hander was scratched from his scheduled start on
Saturday and was examined on Monday because of soreness and
tightness in his pitching forearm.
Parker had forearm issues last season as well and previously had
Tommy John surgery on his pitching elbow in 2009 while in the
Arizona Diamondbacks' system.
The 25-year-old recovered from that surgery to post a 13-8
record with Oakland in 2012 and last season went 12-8 with a
3.97 earned run average, yielding 178 hits in 197 innings to
help the A's win the American League West title.
This spring, Parker had struggled to a 10.61 ERA in three
(Reporting by Larry Fine in New York;
editing by Frank Pingue)
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