Austria's Dominic Thiem poses with his trophy after defeating Slovenia's Aljaz Bedene by 6-2 and 6-4 during the ATP Argentina Open final in Buenos Aires. Pic/AFP

Top seed Dominic Thiem won his second Buenos Aires title in three years on Sunday, laying down an early marker for the clay court season. The 24-year-old Austrian coasted past Slovenia's Aljaz Bedene 6-2, 6-4 in one hour and 31 minutes to extend his perfect record at the tournament, having captured the trophy also in 2016.