Novak Djokovic virtually assured of year-end No. 1 ranking

Novak Djokovic virtually ensured equalling Pete Sampras's record of ending the year as world number one for the sixth time on Wednesday when he reached the Vienna ATP quarter-finals. Djokovic defeated Croatia's Borna Coric 7-6 (13/11), 6-3 and will secure the year-end top spot as long as Rafael Nadal does not take an unlikely...