LONDON, England (AP) — Chelsea defeated Portsmouth 1-0 in the FA Cup final and completed the Premier League champion’s first domestic double yesterday.

Chelsea hit the posts five times and Portsmouth missed a penalty before Didier Drogba curled a free kick in off the post in the 59th minute for his 37th goal of the season.

“It’s fantastic we achieved the double. It was difficult to come back and stay focused for this game because last week we celebrated the title,” Drogba said. “You start to think that you won’t score… I saw a little gap. I hit the post again, but it went in this time.”

Salomon Kalou missed an easy chance in the first half, hitting the ball against the crossbar six metres out in front of an open goal.

Portsmouth could have gone in front just before Drogba’s goal when Kevin-Prince Boateng’s weak penalty kick was saved by Petr Cech’s legs. Frank Lampard also missed a late penalty for Chelsea, with the England midfielder dragging the ball wide.

That Portsmouth survived so long without conceding was unexpected.

The 129th final pitted one of English football’s wealthiest clubs — Roman Abramovich-bankrolled Chelsea — against Portsmouth, which was relegated from the Premier League as the bottom team and is still fighting for its existence while in bankruptcy protection.

“It’s a day that I am very proud and very sad — proud because we could win the game,” said Portsmouth manager Avram Grant, who is set to leave the club. “We closed them (down), we played tactically very well, we gave everything.”

Recent routs by Chelsea, who ended the championship-winning league season with an 8-0 thrashing of Wigan, raised fears that they could be the most one-sided final in decades.

Chelsea took less than four minutes to threaten Portsmouth’s goal, with Lampard shooting wide from the edge of the penalty area and seeing a dipping strike hit the goal frame 10 minutes later.

But having upset the odds to reach the final, Portsmouth weren’t going to capitulate. And having survived intense Chelsea pressure for 20 minutes, Portsmouth were only prevented from taking a shock lead by Cech’s reflex save.

Boateng’s deflected volley reached Frederic Piquionne, but the resulting shot from close range was blocked by Cech.

While fine goalkeeping denied Portsmouth, Chelsea only had dire finishing to blame for not going in front in the 27th.

Ashley Cole forced James to cover the near post before squaring to the unmarked Kalou. The Ivory Coast forward had an unguarded goal to tap into from close range, but explicably lifted the ball against the bar.