at bay in the early stages before easing into the distance to seal his first win aboard the new V4 R Panigale.
Winless since last year's Aragon round, Davies squeezed through on poleman Rea at Turn 1 and held onto the position at the Andretti hairpin, with Puccetti's moving up to third.
by the end of the opening tour.
However, the his race would last just a handful more corners before a technical issue with his Ducati forced him into pitlane at the end of lap two to complete a clean-sweep of non-finishes in America.
Rea ran Davies close in the opening laps, keeping his advantage at under a second. But by lap seven, the Ducati rider slowly started to extend his lead.
Davies continued to open up the gulf between himself and Rea to over three seconds to cruise to the chequered flag.
Rea consolidated second place to extend his championship lead to 81 points over Bautista heading into the seven-week summer break.
Razgatlioglu finished a distant third, securing his sixth podium of the season, with Yamaha's (BMW) in fourth.
hounded Sykes in the closing stages after the BMW rider made a mistake exiting Turn 6, which allowed Lowes through, but could do nothing to usurp him and was sixth.
Ten Kate's completed the top 10.
As well as Bautista, was forced into retirement on lap five when his works Yamaha encountered a mechanical problem.
|1|| Chaz Davies ||Ducati||25||35'05.513|
|2|| Jonathan Rea ||Kawasaki||25||35'08.846||3.333||3.333|
|3|| Toprak Razgatlioglu ||Kawasaki||25||35'17.171||11.658||8.325|
|4|| Alex Lowes ||Yamaha||25||35'21.772||16.259||4.601|
|5|| Tom Sykes ||BMW||25||35'22.336||16.823||0.564|
|6|| Leon Haslam ||Kawasaki||25||35'24.962||19.449||2.626|
|7|| Loris Baz ||Yamaha||25||35'29.150||23.637||4.188|
|8|| Jordi Torres ||Kawasaki||25||35'30.085||24.572||0.935|
|9|| Marco Melandri ||Yamaha||25||35'31.432||25.919||1.347|
|10|| Michael Ruben Rinaldi ||Ducati||25||35'36.255||30.742||4.823|
|11|| Leandro Mercado ||Kawasaki||25||35'37.690||32.177||1.435|
|12|| Eugene Laverty ||Ducati||25||35'44.021||38.508||6.331|
|13|| Markus Reiterberger ||BMW||25||35'47.375||41.862||3.354|
|14|| Sandro Cortese ||Yamaha||25||35'47.502||41.989||0.127|
|15|| Ryuichi Kiyonari ||Honda||25||36'00.996||55.483||13.494|
|16|| JD Beach ||Yamaha||25||36'05.898||1'00.385||4.902|
|17|| Alessandro Del Bianco ||Honda||25||36'18.486||1'12.973||12.588|
| Michael van der Mark ||Yamaha||3||22 laps|
| Alvaro Bautista ||Ducati||1||24 laps|
|View full results|