10-time champion Roger Federer had a tough day at Halle.

Big 3 are back in the French third round.

Alexander Zverev will be the big favorite for a third Munich title.

Novak Djokovic was a little wobbly in his 2019 clay opener.

Novak Djokovic is still in doubles at Indian Wells.

Roger Federer and Rafael Nadal began their march toward an Indian Wells semifinal showdown.

Roger Federer and Rafael Nadal open play Sunday at Indian Wells.

Rising youngsters Stefanos Tsitsipas and former champ Lucas Pouille will contend, along with a few unseeded floaters giving the seeds some early challenges.

A sweaty Roger Federer crashed out of the US Open.

Can either John Millman or Joao Sousa spoil a Roger Federer-Novak Djokovic Wednesday night quarterfinal?

The field is loaded with floating landmines — first-round matches of interest include (7) Gasquet vs. Paire in an all-French,(3) Carreno Busta vs. last year’s finalist (WC) Mayer, (5) Kohlschreiber vs. Seppi, and (6) Cecchinato vs. Monfils…

“I think that’s a bit of extra motivation,” Federer said of the No. 1 ranking perch. “But then again, having lost here last year in the first round, for me, it resets the goals as well, and just take it one at a time and don’t think too far ahead. Not that I did that last year, but on grass, margins are very slim. It’s not so simple, especially when you haven’t played in three months.”

“I had to play my best tennis to have a chance, so that is what I did,” said Zverev. “At the beginning I was struggling a little bit and then I found my rhythm and felt very good on court.”

Potential tough starts for the oft-injured (7) Monfils vs. the riser Basic, and (6) Kohlschreiber vs. Karlovic…

Interesting starts for (1) Ramos-Vinolas 2nd rd. vs. Troicki, (5) Haase 2nd rd. vs. Sousa, (6) Paire opening against French countryman Simon, (8) Zverev net-rushing on clay vs. the home-country favorite Lorenzo, and (2) Edmund vs. the veteran Vesely…