Josh was quite strong as an under 14, but has really gone up a gear or two recently. Milojevic was the top 1995 by some margin at that level, especially on clay (Kyle got one game off him if I remember correctly in the European Championships) but hasn't been so dominant on hard courts.
Kyle has another rematch from last week (won 6-3 in the third), with the prospect of another in the quarter-finals (top seed Luke Saville).
What is happening with Kyle at the start of each of his matches, other than that he looks to be reaching top form. Disappointing for Liam, I wonder whether he's just out of form or there is an explanation. Josh is really progressing from nowhere as he wasn't on my radar 12 months ago and a competitive effort from Luke.