TURIN, Nov 12 — Julian Cash and Lloyd Glasspool became the first all-British duo to claim the year-end doubles number one ranking after winning their second round-robin match at the ATP Finals yesterday.

The top seeds lost their opening match on Sunday but hit back to beat German pair Kevin Krawietz and Tim Puetz 7-6(9) 6-2 in Turin’s Inalpi Arena to stay on course for the semi-finals.