U.S. coach Jurgen Klinsmann said he had to make some halftime adjustments to tighten up the defense.
"We needed to close the gaps a little better so we still have a lot of work ahead of us," Klinsmann said. "[We needed to] make it more compact, more connected between the players and make it more difficult for opponents to come through."
U.S. goalie Tim Howard, who played only the first half and set a U.S. record with his 54th win, wasn't forced to make any spectacular saves, but Turkey kept him on his toes.
"We were narrow defensively and they sensed that and used the flanks," Howard said. "They didn't score [in the first half] but used the flanks well and were dangerous."
The United States opened the scoring on a give-and-go goal by Fabian Johnson and Michael Bradley.
Bradley took a pass from Johnson and then chipped it over the defense. Johnson, rushing up from his outside back spot, one-timed Bradley's pass inside the far post in the 26th minute.
"He played a good ball and his movement off ball and mobility is so good," Bradley said of Johnson. "He shoved the ball inside to me and he kind of told me with the way he was running that he was going to keep running through."
The Americans took a 2-0 lead when a Timmy Chandler cross that the Turkish defense failed to clear found Clint Dempsey, standing alone at the far post. Dempsey tapped it in under keeper Onur Recep Kivrak in the 52d minute.
That meant that Dempsey has scored at least one goal in 10 consecutive years.
"The second half was a little more sluggish, a little slower pace and both teams were a little tired," said Dempsey, who had been a late scratch against Azerbaijan with a sore groin.
Turkey had some second-half chances.
Brad Guzan who replaced Howard in goal, made a kick save on Gokhan Gonul, who was rushing in on goal from the right in the 61st minute. In the 71st minute Mustafa Pektemek shot one way wide from inside the box. He was all alone shooting the ball.
During the 81st minute U.S. forward Jozy Altidore, who put constant pressure on Turkey, forced keeper Kivrak to make a sliding kick save.
While Altidore didn't score, he created several chances with his combination of strength and speed. Turkish coach Fatih Terim said Altidore was one of the U.S. players who really impressed him."
"He is a very powerful striker," Terim said through an interpreter. "The type of striker the center backs don't like much, and he likes to hold the ball so his teammates can join in the attack."
Turkey earned a penalty kick on a handball by center back Geoff Cameron, and Selcuk Inan converted in the 90th minute.