He did that combine testing after having not played for months though, after his shoulder operation, so I'm not surprised that he didn't test as well as he supposedly did earlier in that year. A bit like how Petracca apparently didn't test anywhere near as well at last season's combine as he did earlier in the year at the AIS, when he presumably wasn't carrying the hip injury that I hear he was at the combine.
Acres has elite endurance running in the immediate family, too and has the build for it, so I have little doubt that he would have good natural endurance. Whether he is 2.94sec over 20m fast is an interesting one though.
Here is what Pelchen said about him when we drafted him, so I'm guessing he was going off his earlier testing, rather than what he did at the combine, which was not very impressive:
"We were very surprised he got through. We anticipated one of the West Australian clubs would select Blake. He has had an injured shoulder this year and didn't play all the games in the championships but we think he's the prototype of the modern-day AFL footballer. Blake is 190cm, he's got both speed and endurance and so for us to have a player who can come in and play a number of positions – in a similar mould to Brendon Goddard – I think complemented our three selections nicely. Ideally, we'll have him play between half-back and half-forward, through the midfield." - Chris Pelchen