Luke Bambridge is over in South America for the conclusion of the COSAT circuit, and should be joined by Kyle Edmund next week. Georgina Sellyn has started with a fine win over an Argentinian who was a semi-finalist in a recent Grade 1
Boys R1 (L64)
(12) Luke Bambridge (GBR) Bye
Girls R1 (L64)
Georgina Sellyn (GBR) d. (WC) Maria Constanza de las Mercedes Vega (ARG) 6-4 6-2
R2
Georgina Sellyn (GBR) v (12) Kriszina Kapitany (HUN)
The ITF has been useless for most of the COSAT tournaments. Here's a couple of other sites. The first gives all the draws plus oop. The second has been updated more quickly today (not always the case) and is a direct link to the Boys singles which I assume is your main interest.
The good news is that both won today - particularly impressive from Georgina against a seed.
There was limited play yesterday, but one of the few matches to be completed saw the end of Georgina's singles campaign, though she is in the doubles quarters
Girls R3
(5) Makoto Ninomiya (JPN) d. Georgina Sellyn (GBR) 6-4 6-4
Whilst Martinez has gone on to make the singles final, Luke has regrouped in the doubles, storming through the semis for the loss of just 1 game, but falling short in the final. Georgina made the doubles semis.
Boys Doubles Final
(4) Bitencourt Pinheiro/Galvao (BRA) d. (3) Bambridge/Petrone (GBR/USA) 6-4 6-2