Former World No. 1 Andre Agassi will help coach Grigor Dimitrov at this week's Rolex Paris Masters. Agassi flew out early Saturday afternoon and joined Dimitrov on Sunday at the season's final ATP World Tour Masters 1000 event.

This is at least the second time this year the two have worked together. They were seen practising in July at Georgia Tech University in Atlanta.

Spotted around Georgia Tech: Olympic Gold Medalist and Grand Slam Champion @AndreAgassi. 🎾 🏆 pic.twitter.com/BO7yscaNwa — Georgia Tech (@GeorgiaTech) July 13, 2018

Dani Vallverdu, Dimitrov's coach since mid-2016, is also in Paris. Last year, Vallverdu guided Dimitrov to his best season yet. The Bulgarian won his first Masters 1000 event (Cincinnati) and the biggest title of his career at the Nitto ATP Finals in London. Dimitrov finished 2017 at No. 3 in the ATP Rankings.

Taming The Talent: Why Dimitrov, Vallverdu Make A Good Match

But the 27-year-old Dimitrov has struggled to back up his breakthrough season. After four titles last year, Dimitrov has reached only one final this year, losing to Roger Federer in Rotterdam. Dimitrov is in 22nd place in the ATP Race To London and will not be making a return trip to The O2.

Agassi worked with Novak Djokovic for 11 months, from May 2017 until April 2018, when the two agreed to end their partnership.