Novak Djokovic is losing the PR war and it's probably for good reason after calling out five-time Wimbledon champ Roger Federer. Getty Images Jon Wertheim's Mailbag Jon Wertheim will answer questions from SI.com users in his mailbag every Wednesday. Name: Email: Hometown: Question: SEND Follow Jon Wertheim on Twitter

An opening day baguette. I'll try and patch one of these together every day for the next two weeks:

Borg's recent comments about Federer (that Federer is the third favorite to win Wimbledon and that he wouldn't be surprised if Federer calls it quits if he loses), strike me as being at best, tactless, and at worst, bitter. In contrast, Sampras' repeated assertions that Federer may well break Sampras' record of 14 majors seem much more sportsmanlike. Your thoughts? Am I just being an over-sensitive Fed fan?
-- Pauline M., Somers, N.Y.

• First, good for you to be so willing to consider the possibility that you might be overreacting. Borg's remarks struck me as oddly uncharitable -- your description of "tactless," is fair. But I don't think it's bitterness. Just one man's opinion. He was asked a question and responded honestly, however ridiculous the speculation might sound. (Remember, two weeks, Borg seemed to be tipping Federer to beat Nadal in Paris because Federer had "tactics.") Federer, I thought, had a perfect reaction. Asked about the Borg call-out, he said: "That's how quickly things change, you know. I mean, look, it's his opinion. I don't mind what he says. Obviously at the moment he has a microphone under his face and people ask him many, many things. Once he'll sound more critical, once he'll sound more positive. But it doesn't change much for me. I like when it's praise. When it's something else, when it's more critical, you tend to just forget about it and move on, so..."

I was happy to see Novak Djokovic's recent "calling out" of Roger Federer, commenting how Federer was vulnerable and there were players, including himself, nipping at Federer's heels. It's about time someone remembered that this was a professional, competitive sport and isn't afraid to speak out against Federer and tell it like it is. The past four years have been nothing but constant butt-kissing by the media and fellow players regarding Roger and it's refreshing and exciting to see a player assert himself and have the belief that he could take down his highness. Go, Novak.
-- Mike Boulder, Colo.

• I think that's going a bit far. But I agree that it's not the worst thing that a player has stood up and finally challenged The Mighty Fed. ("Pack a lunch, Rog, 'cause I'm going to be here all day, bubba.") There's something to be said for sportsmanship but sometimes it seemed like men's tennis had a collective case of Stockholm Syndrome, weirdly fond of their tormentor. Even today, did anyone catch Dominik Hrbaty pulling up a seat and sitting down next to Federer during the changeover? Djokovic is losing the PR war and it's probably for good reason. But I have a hard time whacking him around too much for his matter-of-fact ambitions.

Can you do a little explaining in regards to the seedings at Wimbledon? Why was Baghdatis moved up so many spots, yet Roddick was left at No. 6 behind Ferrer and Davydenko? Why weren't Serena and especially Venus moved up in the seedings?
-- Jason Englisbe, Mauldin, S.C.

• Contrary to popular belief, these seedings aren't random. For the men, there is a formula that takes rankings and grasscourt results, etc. into account, You can find it on the Wimbledon website. The results can seem counterintuitive but it's not as if it's subjective. As for the women, the seeds just follow the rankings. Hence, Jelena Jankovic is above Maria Sharapova, though Sharapova is a more accomplished grasscourt player.

Irony: there was a time when the Slams desperately needed to depart from the rankings when the seedings were made. Players such as Marcelo Rios or Serrgi Burguera were "overseeded" on grass. They would go out early, the draw would open up, and the second week was filled with "surprised quarterfinalists." Today -- when there finally is refined seeding -- players are much more complete and the "formula" isn't as necessary.

Do you think that Lleyton Hewitt will ever be relevant again? Thanks in advance.
-- Vishnu Houston, Texas

• I answer this as Hewitt enters the fifth set against Robin Haase (a player worth watching in the few years, btw.) Relevant in the sense that he can pull an upset, reach the second week of slams and help Australia in Davis Cup? Yes. Relevant in the sense that he will return to the top five and win more majors? No.

Let's talk business. With golf facing a soon-to-be swoon (Tiger recovering), could it be tennis that has an opportunity for a much needed boon? C'mon, it's the perfect storm -- we still have Wimbledon and the U.S. Open (arguably the two biggest of the biggies) and Tiger will be out for the year. Let's hope that the alphabet soup powers that be can Emeril LaGasse the beautiful sport of tennis in the coming months (you know, kick it up a notch). Golf ratings are surely going down. Can we pull them back to our sport? A little bit? Pretty please? By the way, did I use enough cliches and TV references for you? Thanks!
-- Chris De Tone, Clearwater, Fla.

• You know the big difference between golf and tennis these days? Golf is organized like a business; tennis is a mess. Until tennis changes structurally, it's hard to envision anything getting kicked up many notches.

Shots, Miscellany

• Want to know from professionalism?

"Dear Tennis Friend,

I've been reflecting on my professional career and I have decided that this will be my last Wimbledon. At the age of 36 I now feel it is time to begin the next chapter of my life, being at home with my family and pursuing other interests. I am very proud with what I have achieved as a professional tennis player, and I want to express a very warm and special "thank you" to all of you that have supported me through the years, all of you that I have been working with, and all of you that have contributed in making my dreams come true....I have been blessed with a long and successful career and I look forward to another great experience here at Wimbledon, for my last time as a competitor. I also look forward to the rest of my 2008 season, which hopefully will include the Olympic Games in Beijing. It would be the most incredible way to finish my career if I could win a medal for Sweden.

It has been a fantastic journey starting with my first satellites in 1990 and my debut on the ATP Tour in 1993, a journey that has given me unforgettable moments, great victories, amazing experiences, so much knowledge and wonderful friendships on and off the court. I will treasure this all my life.

It is with great joy that I look forward to the next phase of my life, including packing my children's school bags rather than my own tennis bags... Please feel free to contact the ATP for any interview requests.

All the best, Jonas Bjorkman.

• The ATP announced that South African Airways (SAA), one of the world's leading airlines, has extended its role as the official airline of the ATP for a further three and a half years in a deal worth $20 million.

• Tennis Canada unveiled the official list of players slated to compete in the 2008 Rogers Cup presented by National Bank, which will take place at Uniprix Stadium from July 28 to August 3. Ana Ivanovic (1st), Maria Sharapova (3rd), and Venus Williams (7th), who had already confirmed their participation, will be joined by Jelena Jankovic (2nd) and Russian players Elena Dementieva (5th), Anna Chakvetadze (8th), and Dinara Safina (9th).

• More props for Tennis Canada: It's embarked on its three year plan to reduce its environmental footprint and become carbon neutral[1] . Carefully thought out with the sustainable development consulting firm, ÉEM, the plan chiefly aims to significantly reduce the greenhouse gas emissions and waste generated by the Rogers Cup presented by National Bank and Uniprix Stadium.

By adopting concrete measures as early as this year, Tennis Canada is demonstrating its resolve to have a direct beneficial impact on the environment and become a model in the development of green standards in tennis and for other organizations and sports events. In addition to offering free public transit tickets to all spectators and providing a downtown shuttle service to and from Uniprix Stadium, Tennis Canada will offset some of the event's greenhouse gas emissions by purchasing certified carbon credits from Planétair. These Gold Standard credits are the highest quality available and will be used to offset the emissions generated by employee and official travel, the stadium and its equipment, the downtown public shuttle, and the car service for the players.

• ESPN Classic will present three half-hour specials on the reigning five-time champion Roger Federer during the fortnight of play, on consecutive Sundays at 7:30 p.m. -- Roger Federer: The Making of a Champion June 22, Roger Federer: The Champion June 29 and Roger Federer: The Man July 6.

• Andrew, New York: A quick Google search yielded this good discussion of tennis' scoring system.