SCOTTSDALE, Ariz. (AP) — Sonny Gray is headed to the Oakland Athletics’ rotation this year.But the 24-year-old right-hander struggled on Thursday.Gray got knocked around for four runs and five hits in one inning in an 8-8 tie between the A’s and Arizona Diamondbacks in 10 innings.He didn’t allow a run in his first spring training start after going 5-3 with a 2.67 ERA as a rookie in 2013.“As good as my changeup was last week, it was hit or miss. It was up and it got hit pretty hard today,” Gray said. “It’s just something that’s going to take a little more work.