Was Andy Murray simply flexing or was he making an ill-advised come-and-get-some gesture to second-seeded Rafael Nadal? 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

For Wertheim's audio roundup of today's matches, click here or scroll down below.

It seems like the Serbs just got here and already we are turning on them. Just last year they were the golden children of a war-torn nation, coming of age. Nole was the class clown -- now nobody's laughing at the Djok. Jelena was a late-bloomer bringing welcome personality to the court; now at Wimbledon she's a ne'er-do-well drama queen. Are they really different this year, or is this just what happens when players finally make it?
-- Andy, NYC

Stepping back I see your point. Fans (and the media) can be fickle. But this line of thinking is a pet peeve of mine. One of the great appeals of sport: the plots change. Players win and lose. People evolve and devolve. Teammates come and go. There's no rule that says your feelings toward Player X or Team Y have to stay constant. I get forms of this theme a lot: "You used to be bullish on Tomas Berdych. Now you say he's underachieving. Which is it, you hypocrite?!" I feel like responding with an extreme analogy. Like, "You used to love O.J. Simpson when he was a running back. Now you think he killed his wife! Care to defend this contradiction?!"

In terms of the Serbs, I do sense a collective, shall we say, chilling enthusiasm. But let's look at context. A year ago, none had won a Slam, one was in the top five, we were getting to know Snezana, (and we only heard that practice-in-a-swimming-pool anecdote 30,000 times as opposed to three million.) This year's Wimbledon: Djokovic calls Roger Federer vulnerable and bows out in round two. Ana Ivanovic comes in as the top seed and loses early to a player outside the top 100. Jankovic goes down in round four, vainly complaining about her court assignment.

Jon -- In response to your response about the court assignments yesterday, in post-match interviews, Venus seemed more annoyed that four of the six matches on the show courts were men's matches. I think if it had been three of six, she would have said "no big deal" to the court assignments.
-- Charlie G., Washington, D.C.

You have Federer, the top seed and a five-time running champ. No way does he leave Centre Court. And you have Andy Murray playing a semifinalist from a year ago. (If Britain had the 14th-ranked woman, l say surely she would have played the Big House.) Take those two out of the equation, and it was two women's and two men's matches.

The equal prize money argument, I get. This one baffles me. You're in the second week of a Slam and you're griping about court assignments? It's not as though the net is higher on Court Two. Just win your match and move on. My sources tell me the most vocal griper was Jelena Jankovic (and her mom). Seems to me her outrage would be a lot better placed wondering why she is in her mid-20s and needs a medic-alert bracelet.

I seem to recall that when Sampras was a two- or three- time champ, he got placed on Court 2 and was similarly upset. Was that when he lost to Bastl?
-- David Brewer, Portland, Ore.

Federer raised the same point. But let's be honest. That was a Wednesday match, not a fourth-rounder in the second week.

I just became a big Andy Murray fan.
-- Newman Granger, Charleston, S.C.

You and half of England. Then he flexed his biceps. I hope that was just an ill-considered heat-of-the-moment response to an emotional win. And not a come-and-get-some gesture to Rafael Nadal.

Okay, this may seem crazy, but why do we need a spring hard court season? It doesn't lead into a grand slam, so it seems to me that it would be pretty easy to change this to a spring grass court season. I know it doesn't lead directly into Wimbledon, but at least we'd get some more grass court tennis then just four weeks, and there would be two masters series tournaments (Indian Wells and Miami) on Grass.
-- Bob Romero, Monee, Ill.

If downgrading the designation of the lousy Hamburg tournament can threaten the very existence of the ATP, imagine the cataclysmic consequences of moving Indian Wells or Miami. I'm thinking the abolishment of the net. Or $5-a-gallon fuel prices. Or massive outbreaks of the Bubonic Plague. Long as we're digressing, this is one reason you laugh when you hear a self-described "reformer" come into tennis and threaten/promise "radical changes." Downgrade one event -- virtually irrelevant in the scheme of things -- you end up with an eight-figure legal bill.

Anyway, back to your question. Plug alert: Yesterday on Tennis Channel, Ted Robinson and I were discussing a range of topics and he brought up the possibility of playing tournaments in field turf, which is all the rage with groundskeepers (and artificial horticulturalists) in the U.S. Maybe we add some more U.S. "grass" events.

Jon, I recently heard you on the radio and was excited to hear that you are a UFC fan. Which players do you think would fare the best in the Octagon?
-- Tyler, Atlanta

It's the love that dares not speak its name, but yes, I am not only a UFC fan but am also finishing up a book on the rise of mixed martial arts. Nadal springs immediately to mind as a guy who could do some damage in the cage. Pretty good physique and you know he's not tapping out easily. Like a Swiss version of Jon Fitch, I think Federer could surprise with his wiry strength. (Doubt Anna Wintour would be in his box for that one.) And imagine if Michael Chang (the newly engaged, Hall of Fame-bound Chang) used his thighs and legs to get you in a triangle. You know this is a fun question but let's revisit when it's not, you know, the second week of Wimbledon.

WTHIGOW Lisa Raymond? Did she retire? She always did well at Wimbledon, so it's strange not to see her in the draw.
-- Mike Baker, Arlington, Va.

A first-team "Dem's good people" All-Star, Raymond is in the doubles quarterfinals with Sam Stosur.

Jon, this question is unrelated to Wimbledon, but it is something that has intrigued me for a while; why are the women's WTA tournaments mentioned in terms of ranking (ex. Dementieva wins the Tier III Istanbul Open) while the men's aren't. I know the ATP also has a ranking system for its tournaments (Master Series, International Gold Series, etc.), but you never hear about this, and when a player wins a tournament it is never described as a "lesser" event.
-- Yara Zurcher, Sao Paulo, Brazil

Ding! Ding! Ding! We have a winner in today's installment of "Why Tennis is Screwed Up and Unnecessarily Confuses Fans!" Tune in tomorrow when we discuss why the men's Wimbledon seeding follows a formula while the women follow the straight rankings! I would try and explain it you, Yara, but this would entail using words like "designation" and I wouldn't want you to fall asleep and miss the weekend's finals.

Hi Jon. Not sure if you noticed, but the one time you don't mention Safin as insurance in your Men's seed report, he does better at a major than he has in over three years. Maybe he felt slighted.
-- Vitaly, New York

Welcome to my life.

Another 7-0 tie-break -- Vaidisova V Chakvetadze, pretty strange considering Chakster's ranking.
-- Khairi Akbar,Kuala Lumpur, Malaysia

Strange match overall. Tears, chokes, coaches being pilloried in public. And, yes, for us tennis geeks: surely this tournament sets the record for most 7-0 tiebreaks.

I would go along with your suggested moratorium on puns. Except you know in the final set at Wimbledon there is no Thai break!
-- David Berman, Honolulu

For this reason -- and this reason only -- we were not sad to see Tanasugarn go down today. Hopes Thai, died.

London Calling

Here's my take on Day 9 at Wimbledon.

Shots, miscellany

• Mike T. of Alameda, Calif. with the YouTube "Lookalikes video" link.

• Nice to see our friend John Helyar (the Federer of business writers) examine the mire of tennis.

• New Chapter Press today announced the publication of its latest book -- The Bud Collins History of Tennis -- the most authoritative compilation of the records and histories of tennis written by Bud Collins.

• Eric, Menlo Park, Calif. writes: A bit late, but funny nonetheless.

• Matt Hughes (not the former UFC champ) of Medford, Mass., shares a good Long-lost siblings:

Stanislas Wawrinka and Matthew Lawrence