Andre Agassi and Andy Roddick stayed on course for an all-American U.S. Open final.
Agassi was beaten by Chilean Fernando Gonzalez while Roddick lost to Tim Henman in the semis.
The world number one, pounded out of the fourth round of this year's tournament by big-serving Australian Mark Philippoussis.
"Every match here I've played better and better and my confidence is going up," said the Australian
Agassi will meet Younes El Aynaoui of Morocco while Henman takes on qualifier for a place in the last 16 at Wimbledon.
The world No. 1 came from behind to beat Andy Roddick 3-6, 6-3, 6-4 in the U.S. Clay Court Championships final on Sunday.
The victory gave Agassi a record six Key Biscayne titles.
Agassi thrashed South Korean Lee Hyung-taik 6-1, 6-0, 6-0, while the Russian was beaten 6-0, 6-1 by Justine Henin-Hardenne of Belgium.
The 47-year-old agreed to coach Djokovic, who has been through a crisis of confidence since winning his 12th major title at the French Open last year, last month.
Top tweets from the second day's play at the French Open featuring John Peers, Novak Djokovic, Caroline Wozniacki and Kristina Mladenovic:
Novak Djokovic confirmed he will be coached by Andre Agassi at the French Open after being humbled by German youngster Alexander Zverev in the final of the Italian Open on Sunday.
Alexander Zverev became the first German to reach the last four at the ATP Finals for 15 years as he beat American John Isner 7-6(5), 6-3 at the O2 Arena on Friday.
Three-times Roland Garros champion Mats Wilander reflects on Day Two of the French Open.
Here are some facts about Federer and his ranking.
Federer, who has agreed to play in the Dutch hardcourt event for the first time since 2015, currently sits on the second spot in the world rankings.
Norma Godinho challenges sporting know-it-alls.
Steffi Graf has taken up a new role, with an Indian connection at that. The legendary German tennis star was, on Wednesday, appointed the Ayurveda brand ambassador of Kerala.
The ITF has made a range of learning resources on its academy platform available for free during the shutdown while the ATP Tour announced an initiative this week that will give fans the chance to bid for sessions with top coaches. Funds raised from the sessions will go to the tour's Coaches Committee to support its members.
Darren Cahill is currently coaching Simona Halep on the telephone or via video link and has asked her to adopt the mindset of an Olympic athlete during an enforced layoff that could extend to the end of the year.
A summary of Wednesday's action at the US Open.
'This will be my first trip to Eastbourne, I have heard great things about the tournament'
In the women's draw, defending champion Garbine Muguruza will play 2010 French Open winner Francesca Schiavone
List of French Open men's singles champions:
He is the first player to win an ATP tournament three times in succession on seven different occasions!
Five-time champion Novak Djokovic overcame a first-set spill to beat unseeded Joao Sousa of Portugal 6-4 6-1 in the third round at the Miami Open in Florida on Sunday.
A list of some of sport's greatest comebacks after Tiger Woods ended an 11-year major championship drought with victory at The Masters on Sunday.
Tennis great John McEnroe finds it hard to believe that Maria Sharapova was unaware she was taking a banned drug that led to her suspension, the seven-time Grand Slam champion said on Saturday.
Factbox on Novak Djokovic's five Wimbledon titles
Federer looked more relieved than overjoyed when Tiafoe's forehand found the net on match point to keep his hopes of a 20th grand slam title alive.
Federer rues missed chances in Tsitsipas thriller
While Monfils's and Svitolina's relationship has blossomed, so have their respective games.
Three-time Wimbledon champion Novak Djokovic beat Canadian Vasek Pospisil 6-4, 6-3 in his first grasscourt match of the season on Wednesday to reach the third round at the Aegon International in Eastbourne.
Jim Courier said Novak Djokovic's decision to work with so-called 'guru' Pepe Imaz was partly to blame for his shock defeat at Roland Garros on Wednesday.
Former World No. 1 and Wimbledon champion has emerged as the surprised as the surprise candidate to take over Novak Djokovic's coach, The Daily Telegraph reported.
The 54-year-old has a whopping $1.7 billion in the bank, thanks to his long time endorsement relationships with Beverage company Gatorade, clothing brand Hanes, American Sportswear giant Nike and playing card manufacturer Upper Deck.
Tennis star Stanislas Wawrinka has backed 18 time Grand Slam champion Roger Federer to become the oldest player in history to seal the world number one spot at the age of 35.
List of French Open men's singles champions:
Floyd Mayweather Jr. preserved his unbeaten record as a professional with a unanimous decision victory over Manny Pacquiao of the Philippines in their welterweight mega bout at theMGM Grand Garden Arena on Saturday.