
The Kyrgios fallout —
Nick Kyrgios, left, received further punishment from the ATP this week for sledging Stan Wawrinka, right. Thus, Kyrgios is sure to be closely monitored in New York.

The Kyrgios fallout —
Kyrgios has faced controversy throughout the year and at Wimbledon was fined $9,500 for two offenses. He was also accused of tanking, which he denied.

The Kyrgios fallout —
Wawrinka will be seeking his second major title of the year after winning the French Open in June.

Nadal's tribulations —
Rafael Nadal is struggling. He hasn't made the semifinals at any major this year and lost early -- for him -- at warmup tournaments in Montreal and Cincinnati.

Nadal's tribulations —
Nadal knows what it's like to win at the U.S. Open, having triumphed twice, including on his last visit in 2013.

Djokovic going for No. 3 in '15 —
The men's favorite is world No. 1 Novak Djokovic. He's won two majors this year and been in all three grand slam finals. If he wins in New York, he would reach double digits in grand slam crowns.

Djokovic goes for No. 3 in '15 —
The heat affected Djokovic last year at the U.S. Open, when he was upset by Kei Nishikori. Nishikori would lose the final to Marin Cilic.

Halep's quest to find form at a major —
World No. 2 Simona Halep reached back-to-back finals in Toronto and Cincinnati after slumping at both Wimbledon and the French Open.

Halep's quest to find form at a major —
Can she, however, play her best tennis in the pressure cooker environment of a grand slam? In her last four grand slams, she's made the quarterfinals once.

Bouchard's shot at redemption —
This is Eugenie Bouchard's last opportunity to salvage her season, at least at the grand slams. Bouchard has won nine matches all season and her ranking has dipped from fifth last October to 25th.

Sharapova on sidelines —
Maria Sharapova's late withdrawal with a knee injury ends prospects of her facing another semifinal against Serena Williams, who beat the Russian in her last outing at Wimbledon.