The Daily Bagel is your dose of the interesting reporting, writing and quipping from around the Internet.
• Video: You don't need to speak Spanish to understand what's going on in Juan Martin del Potro's new SportsCenter commercial.
• The ATP website catches up with Grigor Dimitrov, who he says he expects to appoint a new coach soon after parting ways with Magnus Norman's Good to Great Academy in Sweden.
You need to have change when you feel something isn’t right. When you have a concept in your head of how you want to do something and it doesn’t match up, then it’s tough to collaborate with someone and it’s tough to perform on court.
“I’ve gone through various changes in my career so far, a lot of coaches. I’m not going to hide that, it’s obvious. You’ve got to search for the right thing and hope that next time it’s going to be better. I’ve got no hard feelings and for me it’s just another chapter of my life. It’s not easy, but it’s something new and fresh to look out for.”
• Novak Djokovic's nickname in China is "Little D."
• Kamakshi Tandon of ESPN.com takes a closer look at the only two North American Hispanic players in the top 100: Monica Puig and Christina McHale.
"It makes me feel really special that I'm able to play tennis for the island and just be recognized as a top figure over there," Puig said. "I'm out on the streets, and people will stop me and say, 'Can I have your autograph/ Can we take picture with you?'
"In Puerto Rico, since the sports are very big, I'm a pretty big public figure over there. And it's kind of nice, because it shows that people are paying attention to what you are doing and there's a lot of people who support you."
McHale's Hispanic connections are not quite as well-known but remain personally significant for the 21-year-old.
"The Cuban culture has been a big part of my upbringing," she told ESPN.com. "I love Hispanic food. Especially I love when my grandma cooks Cuban food. Whenever I'm away for a long time at a tournament and I come back, I always want my grandmother to cook me Cuban food like rice and black beans.
" And my grandmother loves to watch novellas, so if I go over to her house, she'll always have Spanish shows. I sit with her and I'll watch."
• An in-depth look at Serena Williams' dominant serving stats.
• WTA Backspin lists this season's MVPs.
• CNN reports that the ITF may change the anti-doping rules in light of what happened to Viktor Troicki.
The ITF said Wednesday there would indeed probably be alterations next year to avoid any possible confusion.
"The tennis anti-doping rules are likely to be changed in 2014 to say that, where a player refuses or fails to provide a sample (as Mr. Troicki did), the doping control officer should try to offer the player an opportunity to speak to the event supervisor or referee to confirm the player's responsibilities under the program," Stuart Miller, the ITF's anti-doping manager, told CNN.
When asked if the change of thinking was due to the Troicki affair, Miller added: "I think it's fair to say that the Troicki case highlighted the issue.
• How well do you know college tennis? Take this quiz to find out.The Big Picture's look at daily life in 2013