Daily Bagel: Rookie Dominic Thiem, why tennis players hate sunscreen

The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.

• Here's Christopher Clarey on 20-year-old Dominic Thiem, who is into the fourth round in his U.S. Open debut.

• Takeaways from the new young adult romance series from Monica Seles. 

• Juliet Macur of The New York Times on why best-of-five-set matches should be banned.

• Very good discussion by Howard Bryant of ESPN on how to discuss -- or not discuss -- weight and fitness issues in women's tennis. 

• From FiveThirtyEight's Carl Bialik: The state of American tennis, and why the women are winning.

• Related: The one question that will tick off any American men's player.

• This is worrisome on so many levels: Why tennis players hate wearing sunscreen (and therefore, they don't). 

• It's come to this: What Canada can teach the U.S. about tennis.

• Non-tennis: A great read on Cowboys owner Jerry Jones.