ANAHEIM, Calif. — During the regular season, he was perfect.

And then the first postseason grounder he saw was a perfect disaster.

After setting a major-league record for rookie shortstops by handling 155 chances without an error in 49 regular-season games, Jed Lowrie booted one in Game One. The miscue in the third inning led to an unearned run, the Angels’ only score of the game.

“I just got in a little bit of a rush. I don’t know if it was nerves so much as trying to do too much,” Lowrie said. “I tried to flip the ball before I caught it. It’s the first one all year [at shortstop].”

Lowrie said none of his teammates had to say a thing once he came off the field at the end of the inning. While he may have been beating himself up internally, especially since the error gave the Angels a 1-0 lead, he had no choice but to move on.

“That’s the hardest part about this game is the routine plays, because you expect to make every routine play,” he said. “I went the whole regular season without making an error at short and the first ball hit to me in the postseason, I just got a little quick with it. All I can do is put it in the back of my head and move on and make the next play.”

When Jason Bay cracked a go-ahead homer to give the Red Sox a 2-1 lead in the sixth inning, Lowrie was off the hook.

“I was happy because we had the lead and it gave us an opportunity to win the game, not because of my situation,” he said. “After that error happened I wasn’t worried so much personally as it gave them an extra out and the opportunity to score the run that they did. I’m thinking I need to put it out of my head and make every play that’s hit to me. Just make the next play.”

Lowrie did commit two errors in the 81 games of his rookie season, but both came when he was filling in for Mike Lowell at third base.

kmcnamar@projo.com