Thiem is the only player to defeat Nadal on clay this year.
World number one wins 2-6 6-1 7-6 6-1 to reach last four for fourth time in a row.
The Austrian bested Djokovic in straight sets to reach second consecutive semi-final in Paris.
The defending champion accused of giving up after losing third set 6-0 at Roland Garros.
Djokovic appointed Andre Agassi as his new coach ahead of the 2017 French Open.
World number seven into his second straight semi-final at Roland Garros.
An abdominal problem forces the Spaniard to withdraw after 50 minutes of action.
Patrick Mouratoglou says Nadal is currently playing like a train at full speed.
Andy Murray is playing his seventh French Open quarter-final.
Wawrinka is looking to win his second French Open title.
World number one's former coach believes Murray is peaking at the right time.
Federer has won 19 of his 20 matches in 2017 despite missing six months with a knee injury.
Nadal has lost just 20 games in his four matches in the French Open thus far.
A place in the last four is up for grabs as Djokovic looks to turn his year around.
Austrian is "physically and mentally" ready to challenge for grand slams believes Gunter Bresnik.
World number one brushes aside inexperienced Russian in straight sets at Roland Garros.
Djokovic is currently in the quarter-final of the French Open.
Despite security concerns, the tennis duo will feature at SW19.
Federer will play just two events after a 10-week break leading up to Wimbledon in July.
Nine-time champion completes fourth straight sets win of campaign at Roland Garros.
Andy Murray is currently in the round of 16 of the French Open as he looks to turn his year around.
Kyrgios crashed out in the second round of the French Open to Kevin Anderson.