Argentina's Thiago Tirante is through to the semi-finals of the ATP clay court tournament in Houston after an upset win over top-seeded American Ben Shelton

Argentina's Thiago Tirante is through to the semi-finals of the ATP clay court tournament in Houston after an upset win over top-seeded American Ben Shelton

Thiago Tirante stunned top-seeded Ben Shelton 7-6 (7/5), 3-6, 6-4 on Friday to book a semi-final showdown with friend and fellow Argentinian Roman Burruchaga at the ATP clay court tournament in Houston, Texas.

Tirante, ranked 83rd in the world, notched his second career win over a top-10 player as he sent the ninth-ranked Shelton packing to reach the second ATP semi-final of his career.

Originally published on doc.afp.com, part of the BLOX Digital Content Exchange.