It’s now safe to say there’s something about the first start of a season that just doesn’t sit right with Cole Hamels.

The 29-year-old lefty made his first career opening-day start on Monday night and it was not a good one. After a brilliant spring training in which he allowed just two earned runs and did not give up a homer in 19 innings, he was pounded by the Atlanta Braves in a 7-5 loss at Turner Field

Hamels gave up seven hits and five runs in five innings. Five of the seven hits he allowed were for extra bases and three were homers -- booming homers -- accounting for four runs.

In his last five season debuts, Hamels has allowed 23 earned runs in 21 2/3 innings (9.55 ERA).

What gives?

“I don’t know,” he said. “You don’t want to (pitch poorly). You want to be able to pitch your best. It’s not like I go out there and try to lose.

“I try to win every game and get the team headed in the right direction. Unfortunately, I wasn’t able to do that.

“I have to bear down in my next start and execute pitch after pitch after pitch.”

Can Hamels do that?

Of course, he can. After losing his debut to Miami last season, he won 10 of his next 12 decisions, including eight in a row.

Pitch execution was Hamels’ downfall on this night. He made a number of mistakes over the heart of the plate and paid for them.