Del Potro had forced six break points during the first set but Nadal fended each one off.
Rafael Nadal could take revenge on Dominic Thiem in men's singles final of the 2018 French Open, while Chinese player Yang Zhaoxuan and her partner Chan Hao-Ching of Chinese Taipei failed to secure their spots in women's doubles final in Paris on Friday.
This time, Thiem faced Cecchinato, a 25-year-old from Sicily who never had won a Grand Slam match until this tournament and was the lowest-ranked men's semifinalist at the clay-court major in 19 years. For me it's incredible.
"If I want to beat him I have to play the way I did in Rome and in Madrid. Good tactics and mentality in the first set give me the possibility to play much better later in the match", said Nadal.
Spain's Nadal will meet Dominic Thiem in Sunday's final.
We're nearly to the end of the French Open for 2018.
Nadal has dropped only one set so far in reaching the final - one more than he conceded in winning the 2017 title.
Seventh seed Thiem is probably second only to Nadal on clay and must take confidence from two victories over the world No 1 on the surface in the last 13 months, including in Madrid just last month. Good thing is I played a lot of good matches this clay-court season. I'm not sure if Thiem and Rafa had a run in the Bois de Boulogne that Rafa would win.
By the absurd standards Nadal has set here, even facing those break points amount to a lapse, as does the opening set he dropped to the terrier-like Diego Schwartzman in the quarterfinals.
"Forget the 10 (French Open titles) and forget what happened previous year, Thiem has to remember what happened in Madrid which is a title Nadal wants to win nearly as much as the French", Wilander, Eurosport's chief analyst, told Reuters.
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That he trailed by a set and a break before rain delays allowed him to change tactics and recover to get there?
"Unfortunately, I was not able to convert my break points".
He does see new maturity in Thiem, more controlled aggression on critical points and more skill on the attack.
When del Potro avoided a bagel in the sixth game of the second, he raised his arms in celebration.
But Checchinato could not quite keep up with Thiem and his big baseline game.
Trying to beat Nadal at Roland Garros in a best-of-five match is akin to trying to beat '08 Phelps in the individual medley, or 2012 Usain Bolt in the 200-meter dash.you get the picture.
"The stop yesterday helps, because it was in a tough moment of my match", Nadal said.
"He's been a very complex opponent".
Thiem is not only trying to overcome Nadal's massive psychological and experiential edge in his first-ever Grand Slam event final, but attempting to join an elite club of men who have elbowed their way into the Big Four's monopoly on major titles over the last 10 years.
Cecchinato, who was banned for match-fixing in 2016, had never won a match in the French Open prior to this year's edition.
"It was not a very nice feeling", Thiem told the Court Philippe Chatrier crowd afterward.
Of the 25 states where the suicide rate increase by more than 30 percent, the most noticeable rises occurred in western states . Firearms were found to be the most common method of suicide, again used by those both with and without mental health issues.
Stephens has dropped just one set this entire tournament and has been playing extremely clean tennis, making very few mistakes. Stephens avoided the embarrassment of a bagel in the final set but Halep held her serve to win her maiden Grand Slam title.
Rescue teams have been searching frantically for survivors and victims in the ravaged landscape, covered in ash and lava. Guatemala's disaster agency, Conred, suspended the search several times this week, including for most of Thursday.
Des Granges said e-poll books help process voters, while tabulators "help automate the counting process for the poll workers". It's also the highest turnout for Ontario since 1999, when 58.3 per cent of eligible voters turned out to cast their ballot.
Somali officials have said civilians have been killed in more than one joint USA military operation with Somali forces. The United States has intensified efforts in Somalia during the past two years, picking up the pace of drone strikes.
Growing despair in Gaza over blockade-linked hardships, including daily power cuts and rising poverty, have driven turnout. Israel has accused Hamas of trying to carry out attacks and damage the fence under the guise of the protests.
He buried 7 of 15, and Golden State connected on 14 of 38, including 9 of 17 en route to a 61-52 halftime advantage. In our Game 4 takeaways, we will try to ignore the future and focus on the present for one more day.
USA officials believe China has for years carried out hacking attacks on the US military, the US government and US companies. Both media outlets cited unnamed officials and the contractor targeted in the cyber attack was not identified by either.
The group and Russian Federation are due to meet at its headquarters in Vienna on June 22 to discuss production policy. As interesting as all these numbers may be, the June 22 OPEC meeting is drawing the most attention right now.
They lead Game 4 of the NBA Finals 86-65 as they try to sweep their way to a second straight championship and third in four years. Durant, off his career personal best of 43 points, added 20 points, 12 rebounds and 10 assists as he locked down the MVP award.
Kevin Durant named NBA Finals MVP
Arguably, James is deserving of the regular season MVP and Finals MVP awards but given previous years this looks unlikely. A bounce here, a couple stops there, the Cavs could be leading in these finals and the conversation would be different.
Trump rails against 'unfair' trade at G7 leaders summit
World leaders attend a working session of the G7 Summit in the Charlevoix city of La Malbaie , Quebec, Canada , June 8, 2018 . Discussing Russia's absence, Trump made the vague comment that "something happened a while ago where Russia is no longer in".
Royal newlyweds attend Queen's birthday parade
She and Harry arrived at Buckingham Palace in the back of a vehicle before switching to their carriage for the big occasion. Over 1,400 soldiers took part in the parade to mark the Queen's official birthday.
Israeli Army: Slain Gaza Medic Wasn't Shot Deliberately
But the vast majority of Palestinian casualties, including over 3,700 people wounded by Israeli fire, have been unarmed. Demonstrators have also called for the "right of return" to lost ancestral homes in what is now Israel .