In shorts and sandals, Dan Carpenter was as relaxed as it gets Thursday.

And for good reason. He had a few days of golf and fishing ahead of him — part of the annual FinsWeekend, benefiting the Miami Dolphins Foundation.

Carpenter better enjoy it. Come August, his life would fray the strongest nerves.

There are two reasons why:

1. Wife Kaela is due with the couple’s first child, a son.

2. His very livelihood will be on the line.

Carpenter, the Dolphins’ kicker for the past five years, will be locked in a heated training camp battle with Caleb Sturgis, picked by Miami in last month’s draft.

Adding to the stress: The baby is due on a week of a road preseason game, which is when jobs are often won and lost.

“There will be a lot going on,” Carpenter said with a grin. “The child was planned. We were a little rusty with the timing.”

There’s no stopping it now — the kid or the competition. It’s not unusual for teams to bring in rookie kickers to push their incumbents. But most often, it’s an undrafted kid.

When a franchise invests a draft pick — particularly in the fifth round, as was the case with Sturgis — it means serious business, particularly for the veteran.

Asked if he was surprised by the news, Carpenter responded: “Yes and no.”