ETHAN AMMON stunned Joshua Abraham yesterday and will oppose his twin brother Ty when the Catch National Junior Tennis Championships continue today at Public Courts, King George V Park, St Clair.

Ammon turned 15 years old yesterday and gave himself the perfect birthday present by coming from behind to send the top-seeded Joshua packing 2-4, 4-1, 5-4 (7/4) in the under-16 quarter-finals.

The second-seeded Ty, who cruised past Gianluc Robinson 4-2, 4-0 to book his place in the final four, will go after revenge for Joshua when he opposes the left-hander for a place in the under-18 semi-finals today.

Ty, who won an under-18 singles match in the ITF (International Tennis Federation) Junior Tournament last week at the same venue, struggled to take out Ross Hackshaw 6-2, 4-6, 6-2 in his first match in the division yesterday.

The fact that Hackshaw was able to take a set from the Tobagonian was very surprising, especially after he had surprisingly needed three sets (4-0, 2-4, 4-1) to eliminate Oliver Cattermole and reach the under-16 quarters a little while earlier.

Jelani Davidson took out eighth-seeded Che Sanchez 4-1, 4-1 and will face Hackshaw today for a place in the semis, while last year's top under-14 player Elan Mendes and Scott Lanser, the No. 1 under-14 player of 2010, will clash in the other quarter-final.

Lanser will be looking for revenge after blowing a 5-2 lead and going under 7-6 (8/6), 6-0 when they squared off just yesterday for a place in the under-18 quarters.

There will be semi-final action in the girls' under-10, 12 and 14 divisions and quarters in all other categories today.

First serve is 9 a.m.

Yesterday's

selected quarter-final results:

Boys' Under-12 — S. Hackshaw bt R. Thomas 4-0, 4-1; A. Escalante bt F. Von Waldau 5-3, 3-5, 5-4 (7/3); J. Farah bt K. James 4-1, 4-2; L. Ramirez bt X. Joseph 4-2, 5-3.

Girls' Under-14 — C. Rudolfo bt D. Lashley 4-0, 4-1; E. Davis bt J. Ammon 4-0, 4-2; E. Trestrail bt A. Chan 4-0, 4-2.