Marin Cilic sealed his place in the ATP World Tour Finals and ended David Goffin's quest to qualify for the season-ending tournament by beating the Belgian to reach the quarter-finals of the Paris Masters on Thursday.
Cilic secured one of the two remaining places in the lucrative event in London this month with a 6-3 7-6 (11-9) victory in the French capital.
The world number 10 from Croatia moves above Dominic Thiem into eighth spot in the Race to London after the Austrian was beaten by Jack Sock in the second round on Wednesday.
Tomas Berdych can take the eighth and final place at the expense of Thiem if he wins the title this week, while Jo-Wilfried Tsonga must be crowned champion in his homeland to have any chance of qualifying.
Cilic has hit form at the right time, winning the Swiss Indoors Basel title last weekend for his second title of the year and will take on world number one Novak Djokovic or Grigor Dimitrov in the last eight in Paris.
"It's been a huge last 10 days for me," said Cilic, who will play in the season-ending event at the O2 Arena for a second time.
"I played very well today. I had the pressure and David had beaten me the past few times. I want to keep going now and can't wait to return to the O2. It means a lot to qualify again."