Murray will now need some help in a later group match, with a win by Marin Cilic over Stan Wawrinka sending the Scot into the weekend semi-finals at the year-end event.
Uz to skots atbildēja ar vēl vienu lauztu pretinieka servi, bet devītajā geimā viņš pielika punktu uzvarai setā ar rezultātu 6-4.