Nick is joined by Jane Mangan live from Tattersalls in Newmarket for the opening exchanges of Book One. As the trade gets off to a flying start, they catch up with a whole host of heroes of recent days, including Jessica Harrington, Henry Dwyer, Ben Sangster and Eve Johnson Houghton. Bloodstock agents Mark McStay and Ross Doyle join the conversation, while Kia Joorabchian gives us a sneak preview of his intentions before acing on them in some style. Jason Singh gives the sales house overview. Plus, from Australia, JA McGrath is trackside for the Ka King Rising barrier trial, and gets immediate reaction from David Hayes and Zac Purton, while - in conjunction with AusHorse - Newgate's Henry Field charts the extraordinary success story of stallion sensation Extreme Choice. Dan Barber wraps up the best of Arc weekend from the Timeform perspective.