The top two in the world will battle Sunday at the ATP Cup.

Pablo Carreno Busta wins his first title in 2.5 years.

The only Top 8 seed to make the Cincinnati quarterfinals is Novak Djokovic.

Nikolaz Basilashvili will bid for a second straight Hamburg title.

Filip Krajinovic failed to serve out a straight set win over Alexander Zverev in Hamburg.

Will there be more upsets on opening day of the quarterfinals?

Federer v Tsitsipas, Nadal v Berdych at the Australian Open on Sunday.

Will this be the last tradition Davis Cup semifinal round?

(1) Federer vs. (WC) Murray 3rd rd.? (4) Del Potro vs. (15) Kyrgios 3rd rd.?…

The outrageous number of opening-round seeds vs. floaters match-ups includes (16) Kyrgios vs. (WC) Wawrinka, (11) Schwartzman vs. Edmund, (6) Cilic vs. Coric, (3) Del Potro vs. Nishikori, (14) Fognini vs. Johnson (winner to meet Shapovalov), (5) Dimitrov vs. Verdasco, (10) Goffin vs. Raonic, (4) Anderson vs. Rublev, (7) Thiem vs. the fast-rising Tsitsipas, (9) Djokovic vs. Chung, and (2) Zverev vs. Ferrer…

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…

Wildcards went to Spain’s Jaume Munar, Norway’s Casper Ruud and Sweden’s Mikael Ymer…

(1) Nadal looking at a quarterfinal rematch with (6) Thiem from last week in Madrid…

Interesting starts include (1) Anderson vs. the Barcelona finalist Tsitsipas if the Greek isn’t too gassed, (8) Medvedev vs. the veteran Sousa, and (4) Muller on his worst surface (although he reached the final last year) vs. the American Sandgren-Tiafoe match winner…

Rafael Nadal’s clay win streak is up to 17.