Thiem follows up Nadal shock with Argentina title triumph

Update: Feb 14th, 2016 16:16 EST

Austria's Dominic Thiem backed-up his shock semi-final win over Rafael Nadal to clinch the Argentina Open title on Sunday with a 7-6 (7/2), 3-6, 7-6 (7/4) victory over Nicolas Almagro.

Thiem, the world number 19 and the youngest player in the top 20, captured his fourth career title all of which have been on clay.

The 22-year-old claimed trophies on the surface at Gstaad, Umag and Nice, all in 2015.

Rafa Nadal crashes out to Dominic Thiem in Buenos Aires

ATP 250 BUENOS AIRES

Rafael Nadal returns with a win in Buenos Aires

Thiem had made the final by seeing off Nadal 6-4, 4-6, 7-6 (7/4) on Saturday, saving a match point in the process.

Almagro, 30, was the champion in Buenos Aires in 2011.