Great Britain won one of the 28 titles, Josh Kerr's 1500m on 13 September; Keely Hodgkinson and the mixed 4x400m team finished second. Sources: bbc.co.uk (Harry Poole, BBC Sport) and nbcsports.com full results.
The British market resolves on the official results, YES if athletes or teams representing Great Britain and Northern Ireland win two or more of the 28 Ultimate titles, relay titles included. If World Athletics has published nothing by 14 September, BBC Sport and the Guardian settle it.
One of the last six Diamond League finals saw a world record. The Diamond League final is the season-ending meeting where the best athletes face each other, and World Athletics already runs it. We looked at the last six finals in the federation's own reports, and asked whether a senior world record was set at each.