The results weren’t very good for left-hander Wade Miley, but he came out of his start against the Seattle Mariners on Sunday saying his arm felt great and the ball felt just as good coming out of his hand.

Still, manager Kirk Gibson wasn’t ready to guarantee that Miley would be among the first four starters to pitch for the Diamondbacks when the season begins next week.

“There’s nothing we’re apprehensive about as far as his arm and the way he threw the ball,” Gibson said after Miley gave up four runs in 3 1/3 innings. “But it’s just that he missed a start and is a little rusty.”

Miley was bothered earlier this month by a bout with a dead arm, prompting the Diamondbacks to skip his turn and ease him back into action with an abbreviated appearance in a minor-league game last week.

The club will have to decide if Miley is ready to begin the year in the rotation or if it would make more sense to start him on the disabled list and pencil him in for April 9, the day the Diamondbacks need a fifth starter for the first time. If he’s pushed back, it likely would mean left-hander Pat Corbin — the apparent leader in the competition for the fifth spot — would take his turn the first time through the rotation.

On Sunday, Miley threw mostly in the 88-90 mph range in the early innings, occasionally hitting 91-92 mph, according to a scout in the stands. He gave up two home runs, the first to lead off the game by Franklin Gutierrez, and the other a three-run shot by Kendrys Morales in the third inning.

“I felt fine,” Miley said. “I felt like I was firm. I was able to throw in and out. The change-up was good. The slider was OK. I tried to throw a couple of curveballs in there. I was working on some things, but overall I felt good.”