Very last one stumps me yet again, and I'm sure I'll kick myself when one of you gives me the oh-so-obvious answer. 17a Rubbers in Aussie game (4) Last 3 letters are LES. Just one initial vowel to find (well, I assume so) and I can't find it.
No prob: rubber is always ule in crosswords! As for the rest of the clue...? Possibly because its hidden in Australian Rules Football, but that seems a bit weak.