After dropping the second set, Ferrer won the final five games. It was the 20th ATP title for Ferrer, and the 10th on clay.
“I am very happy for this title. I cannot describe it with other words,” said Ferrer, in the courtside interview. “It’s very hard to win back-to-back titles, and this tournament in Buenos Aires is always very tough. I am very proud.”
The No. 4 player in the world struggled with his first serve in the second, as Wawrinka broke twice with a strong return-of-serve.
It was the first final for the Swiss star since winning the Aircel Chennai Open in India in 2011.
"It's been a great week for me and I must recognize that David is a great champion," said Wawrinka, upon receiving the runners-up trophy.
It was the fifth consecutive title for a Spaniard in the tournament. Tommy Robredo won in 2009, Juan Carlos Ferrero in 2010, and Nicolas Almagro in 2011.
“Spanish tennis is going through a marvelous time,” Ferrer said. “In the last 10 to 15 years, there [have been] great tennis players. There are always a couple of players in the Top 10 and because of that, since 2009, there have been only Spanish players winning this tournament.”