DUNEDIN, Fla. — When Clint Frazier got hit with a thrown ball while stealing second base in the fourth inning Sunday against the Blue Jays, it was easy to think that stuff has a way of happening to the outfielder, even though it didn’t seem to bother him.

However, when he was drilled in the left forearm by a Ken Giles fastball in the sixth, it was more serious. Frazier held his left arm before moving toward first base, where Darren London, the Triple-A trainer, joined him. London did some tests and Frazier left the game.

Remember, it was the first game of last spring when Frazier suffered a concussion after hitting his head on the fence while falling down in Bradenton. The lingering effects from that injury limited Frazier to 15 big-league games a year ago.

So eight games into another exhibition schedule, was Frazier injured again? Fortunately for him, he wasn’t.

“I’m fine,” Frazier said at his locker in the clubhouse while a 5-2 Yankees loss was in progress. “Left forearm, right pinkie.”

The plan was for Frazier to play six innings in the field, but when he got hit for the second time, manager Phil Nevin (Aaron Boone was in Tampa managing against the Tigers) decided it was time for Frazier to exit after what would have been his final plate appearance even if he hadn’t been drilled.

Asked if there were tests scheduled, Frazier said: “From my understanding, no. Just ice.’’

With Giles’ heater tight, Frazier was annoyed the pitch was not far from his head. Considering his experience with concussions, you can understand why.

“I was more upset with how close the ball was to my head. That’s what I was unhappy with,’’ said Frazier, who struck out looking in the second and reached base on an error in the fourth. “I knew I was fine once I shook Darren’s hand at first. You can’t tell I was hit right now.’’

Frazier’s forearm was red from the ice and his pinkie had a small black wrap on it.

While the battle for the starting first-base job between Luke Voit and Greg Bird gets all the attention, Tyler Wade and Frazier are fighting for the fifth outfield spot.

That came open when Jacoby Ellsbury didn’t come to camp due to plantar fasciitis. He is in Arizona running, but it isn’t known when he can resume baseball activities. Until he is ready to start hitting and throwing, Ellsbury won’t report to Tampa.

If healthy, Ellsbury would have been the most expensive fifth outfielder in baseball history since the Yankees owe him $47 million for this year and next.

Now, that spot will be filled by one of two inexperienced players and, on the surface, Wade appears to have a slight edge only because in an age when versatility is valued, the left-handed-hitting 24-year-old can play second, short, third and left field. He can also pinch run. Frazier is a left fielder who could jump into right if needed. But he hits right-handed for a team that is short on lefty swingers.

Also playing in Wade’s favor is that the Yankees could decide Frazier, 24, needs to play at Triple-A Scranton/Wilkes-Barre after appearing in just 69 combined games in the majors and minors a year ago.