Jack was on Ch 7 news tonight showing off the greyhound he's racing. Compared it to Lids - fast, lean and muscly.
In another interview yesterday IIRC played on 3aw's hourly news (I can't find the audio link), Jack mentioned he has had something like 15 ops over the last 12 months or so and that it affected preseason (and thus the season) as you're thinking about the ops and recovering from them. Hopefully once Jack gets back into full training after his latest niggle he gets a good run through the preseason which then should have him in good shape for the season proper.