TORONTO — Even though it was the skinniest of leads, Andy Pettitte was annoyed he gave it up.

Working with a one-run advantage against the Blue Jays in the seventh inning yesterday against Alex Gonzalez, Pettitte surrendered a solo homer and then waited seven more innings before the Blue Jays won, 3-2 in 14 innings, at Rogers Centre.

“That is a tough one, we had the lead and I got a ball inside to a team that hits a lot of home runs,” Pettitte said of the MLB leaders in homers. “With a lead late in the game, that will keep you up at night.”

Had Pettitte been better supported, he would have won. In 72/3 innings, he allowed two runs on two solo homers, five hits and fanned a season-high 10.

Pettitte wasn’t beating himself up too much over Gonzalez’ homer because inside is where he wanted to pitch the right-handed hitter.

“I felt I was running balls in, but he was one up on me with that,” Pettitte said.

Pettitte said he got hurt when he left balls up like he did to Vernon Wells, who is a career .354 (17-for-48) hitter against Pettitte, in the second inning and Wells smacked it for a home run and a 1-0 Jays lead.

“The ball to Vernon was off the plate and up,” Pettitte said. “The double to [Edwin] Encarnacion, I left up.”

Encarnacion opened the third with a double to left, but Pettitte retired the next three batters to keep the deficit at 1-0.

The circumstances certainly were set up for Pettitte to pitch well. He was 6-0 with a 1.12 ERA in day games this year. The ERA was second among AL pitchers in day games. He was also 20-12 against the Blue Jays and a sparkling 15-5 at Rogers Centre.

In Pettitte’s last three starts, he is 2-0 with a 1.99 ERA. Pettitte, who will be 38 on June 15, is constantly asked if this is the final year of what is developing into a borderline Hall of Fame career.

He never answers it definitively because the lefty with 236 career wins knows when he does go away there is no coming back. Yet, how can a competitor like Pettitte walk away if he continues to pitch this way?

Better yet, how can the Yankees let him leave.