So both Nadal, the 10-time champion at Roland Garros, and 11th-seeded Diego Schwartzman, attempting to reach a Grand Slam semifinal for the first time, were given a night to rest before they are scheduled to resume Thursday at Court Philippe Chatrier.
After dropping the opening set of his first round match he won the next 12. He'll now face Thiem who's arguably been the best player besides Rafael Nadal in the clay court season.
Rafael Nadal admitted the rain saved him from a shock French Open defeat. The 32-year-old Spaniard is 84-2 for his career at the French Open, winning four consecutive titles from 2005-08, another five consecutive from 2010-14, and No. 10 a year ago. The second set like, the first was dominated by serve until Cilic fired himself up to break at 4-4 - a furious Del Potro throwing his racket at the changeover.
Nadal was serving at 5-3, 30-15 after having dropped the first set when play was stopped on Wednesday.
And yet, insists Nadal: "I just go on court knowing that every match is hard, and I can lose and I can win".
Del Potro's win over Cilic means he'll compete in the Roland-Garros semis for the first time since 2009, and the victory also means he'll make his way back into the ATP's top four as of Monday, per tennis writer Jose Morgado.
Things improved for Nadal after a first rain interruption on Wednesday. I'm not interested in these things, I just play tennis.More news: Amazon To Exclusively Broadcast Premier League Games From 2019
He buckled at 5-5 and sent a backhand long on break point, leaving del Potro to serve for the match, which he did easily as Cilic sent three more backhands out. "I'm not that young anymore", Thiem had said before his quarter-final match Alexander Zverev. The 33-year old football said that he has a long time to go before he will think about hanging up his boots. I had surgery three times on my wrist and I was close to quitting this sport.
Women's world No. 1 Simona Halep will retain that position after she made her way to the women's final for the second year in succession, beating third seed Garbine Muguruza 6-1, 6-4. "I'm feeling good, happy, I can't complain", he had said.
Sloane Stephens' clash with Madison Keys represented a rematch of the 2017 US Open final, which Stephens won.
"I thought that after nine years I will play a different one, not Rafa or Roger", he added.
-When you buy Tennis Channel Plus, your 12-month subscription gets you access to every ATP Masters 1000 tournament played outside the US, and every round through the finals of WTA Indian Wells, Miami and Cincinnati.