Rouge Serret smashes PB with 10.17 - fifth fastest Aussie ever.

[Sharmer]

@kitkat1

And Perth’s current golden boy Ben Offereins has run his PB (for 400m, that’s his primary distance) on the weathered track in Sydney this year.

most of the times getting the attention is for the 100m, not sure I have come across many breakthrough PBs in the 200 or 400, probably because the favourable tailwind for the 100m means a back straight headwind for the 400m