The Latest on the opening day at the French Open:

Postponed and its crowds nearly all driven away, the French Open is finally underway, defying both the coronavirus and autumn rain with play for the first time under the new roof at the revamped Philippe Chatrier showpiece court.

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Four s[ecators walk to their seats at Suzanne Lenglen court to watch a first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

The Latest on the opening day at the French Open:

A lone spectator at Suzanne Lenglen court watches Victoria Azarenka of Belarus in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

It will need it: the forecast is grim for the coming days of its covid-enforced autumn slot, pushed back from May and June.

Italy's Jannik Sinner plays a shot against Belgium's David Goffin in the first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoChristophe Ena)

Italy's Jannik Sinner plays a shot against Belgium's David Goffin in the first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoChristophe Ena)

Spectators take cover under an umbrella as rain suspended several first round matches of the French Open tennis tournament against at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoMichel Euler)

Spectators take cover under an umbrella as rain suspended several first round matches of the French Open tennis tournament against at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoMichel Euler)

Suzanne Lenglen court is near-empty as Victoria Azarenka of Belarus plays in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in ParisParis, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

Suzanne Lenglen court is near-empty as Victoria Azarenka of Belarus plays in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in ParisParis, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

A crowd, if it could be called that, of around 150 spectators was on hand to see David Goffin, seeded 11th, and Jannik Sinner from Italy hit the first balls in main draw play Sunday under the Chatrier roof that means the French Open joins the other majors as being able to guarantee play in inclement weather.

Four s[ecators walk to their seats at Suzanne Lenglen court to watch a first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

Four s[ecators walk to their seats at Suzanne Lenglen court to watch a first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

It will need it: the forecast is grim for the coming days of its covid-enforced autumn slot, pushed back from May and June.

With only 1,000 spectators allowed per day, the cool weather and players undergoing batteries of tests, the fortnight promises to be unique, a far cry from the usual festival of Grand Slam tennis on the clay courts on the western edge of Paris.

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A lone spectator at Suzanne Lenglen court watches Victoria Azarenka of Belarus in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

A lone spectator at Suzanne Lenglen court watches Victoria Azarenka of Belarus in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

Italy's Jannik Sinner plays a shot against Belgium's David Goffin in the first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoChristophe Ena)

Italy's Jannik Sinner plays a shot against Belgium's David Goffin in the first round match of the French Open tennis tournament at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoChristophe Ena)

Spectators take cover under an umbrella as rain suspended several first round matches of the French Open tennis tournament against at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoMichel Euler)

Spectators take cover under an umbrella as rain suspended several first round matches of the French Open tennis tournament against at the Roland Garros stadium in Paris, France, Sunday, Sept. 27, 2020. (AP PhotoMichel Euler)

Suzanne Lenglen court is near-empty as Victoria Azarenka of Belarus plays in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in ParisParis, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)

Suzanne Lenglen court is near-empty as Victoria Azarenka of Belarus plays in the first round match of the French Open tennis tournament against Montenegro's Danka Kovinic at the Roland Garros stadium in ParisParis, France, Sunday, Sept. 27, 2020. (AP PhotoAlessandra Tarantino)