The Netherlands retained its women's Olympic field hockey title by controlling the second half and beating world champion Argentina 2-0 at Riverbank Arena.
The Dutch scored off two penalty corners after the break to join Australia as the only three-time Olympic champions.
At the final whistle, the Dutch celebrated with a mass hug in their circle.
Eight of the players earned their second straight gold medal.
"I can hardly believe it," one of the eight, midfielder Eva de Goede said. "I had a good feeling from the beginning and we played such a good first half, and the second half they (Argentina) were absolutely nowhere."
Winners of all seven of their games, the Dutch women gave their men's team extra incentive to record the first-ever Olympic double when it plays Germany in that final today.
The women's final between the world's best two teams was riveting for being tight rather than breathtaking until Carlien Dirkse van den Heuvel scored from a rebound off de Goede's corner in the 40th minute.
"That goal just had to be scored," Dirkse van den Heuvel said. "We had been better than (Argentina) for the entire game and if you take too long scoring, it only gets more and more difficult, so it just had to happen."
The Dutch turned rampant, and after captain Maartje Paumen had a corner saved in the 53rd minute for the second time, the specialist didn't miss her next chance a minute later.
Paumen's penalty corner stuttered throughout the tournament, but came good when it mattered. She scored two in the semifinals and her final goal brought her Olympic tally to a record 14.
Argentina's captain, Luciana Aymar, lived up to her reputation as the best player in the game, but couldn't celebrate her 35th birthday by leading her team to victory in her last match before retirement.
The Dutch have been the bane of Argentina at the Olympics.
Las Leonas, the Lionesses, lost to the Netherlands in the 2004 and 2008 semifinals and finished with bronze medals, to go with their silver in 2000. That left Aymar as the first woman to win four hockey medals.
The Netherlands played the majority of the match pressing in Argentine territory while Las Leonas attempted to hit on the counterattack.
The Dutch twice missed chances in goalmouth scrambles in the first three minutes.
Then Argentina corner specialist Noel Barrionuevo sent her first effort wide left in the 9th, and Dutch goalkeeper Joyce Sombroek saved a low backhand shot from Aymar after her 35-meter run.
The match paused when Mariela Scarone was hit under the left eye by the stick of Ellen Hoog, who also hit New Zealander Katie Glynn in the head in the semifinals. Scarone, with a towel staunching the blood, walked off but returned in the second half.
Dirkse van den Heuvel finally broke the deadlock smashing in the corner rebound on the volley.
Paumen's second corner, after giving two attempts to De Goede, was saved again, but another chance straight away was a chance too many for Argentina, and Paumen flicked it home high and to the right.
With the two-goal cushion, the Dutch controlled the last 16 minutes to ease to victory in front of a crowd packed with cheering and stamping orange-clad fans.
Earlier, host Britain won the bronze by beating New Zealand 3-1.
