We're just a little way past the halfway mark in the year, and I thought it might be a good idea to look at some of the ATP statistics. Am I alone in thinking that I'd gladly trade the "Zagat Guide: Best of the WTA" feature on the WTA home page for some ... stats? Surely there's some sponsor out there willing to slap it's logo on a body of statistics — even if it's just a skeletal version of the Ricoh ATP Matchfacts. I mean, wouldn't be fascinating to know which WTA player has been broken the most times (I think we're looking at a 34-way tie, with 300-plus service breaks).

Seriously, though, there's always been a resistance in tennis to statistical analysis, and I'm not really sure it's justified, any more than is the belief that if you just had all the relevant stats, you would know exactly why this or that player won or lost a particular match. Here's but a recent example of what I mean. Rafael Nadal played a great first set against Novak Djokovic in the Wimbledon final, but his nerve failed at the critical moment and he literally gave away two points at the climax (both forehand errors) to give Djokovic the chapter, 6-4. Those errors carry no more weight in the stats than comparable ones made at 40-0 at 2-2, or in the 1-5 service game, when all hope for a set is lost.

Nadal made just 15 unforced errors in the Wimbledon final, and he hit 21 winners. Djokovic had a dozen errors and 27 winners. This suggests a very close, high-quality match. But let's face it, the most interesting aspect of that clash is that while the shotmaking was at times breathtaking and the mental stress palpable, it was an epic win rather than an epic match. It was basically a hunt, and the match wasn't too far along when we saw the ending was inevitable.

BTW, there was a lot of discontent in the press corps over the way the stats were kept at Wimbledon, and very little confidence in some aspects of their accuracy. But that's another story. Now, let's look at each category in the Service Game Leaders tab of ATP Matchfacts and see what, if anything, is noteworthy and surprising. Tomorrow, we'll look at the Return of Service leaders.

Aces
Milos Raonic leads the tour with 509 aces, served up in 37 matches. Would you believe that Nicolas Almagro (No. 7 on the list) has hit more aces than Andy Roddick (No. 9)? Almagro has 378 and Roddick 362. But here's the catch — Almagro got his in 48 matches while Roddick played just 27. So right off the bat, we see how deceptive stats can be. Clearly, an aces-per-match stat would be far more relevant, and it could easily be added. Personally, I would rank the players on the basis of APM, so I took it upon myself to do some of the math.

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By my calculations, No. 4 Ivo Karlovic ought to be the ace leader, because he's averaging 17.4 aces per match; John Isner is serving 14.5 aces per match, compared to 13.7 for Raonic. Roddick is close to Raonic, at 13.4, while Almagro's APM stat is 7.8. The guy just plays a lot of matches.

Biggest surprise: Feliciano Lopez has clocked 502 aces, second only to Raonic in sheer numbers. Lopez's percentage is a very impressive 13.2 — almost identical to the numbers posted by Raonic and Roddick.

First-Serve Percentage
This is a valuable, straightforward statistic that needs no tweaking for relevance, and it also establishes a good baseline for performance. As of this moment, only one player is getting more than seven out of 10 first serves in, and that's the leader in this category.

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I'm not sure if I asked, "Who has the best first-serve percentage in the ATP?" a bunch of you would jump up and yell, Potito Starace!!!!!

But there it is. He's serving at 72 percent. Only one other man is getting 70 percent of his serves in, Nikolay Davydenko—and we certainly see where that's gotten him this year.

Here's something: only one of the top 10 ace blasters is in the top 10 when it comes to first-serve conversion rate. Isner, who's got 408 aces in 28 matches, is No. 6 on the ace leader board. He's also No. 3 on the conversion table (69  percent), where Ivo Karlovic is No. 11 (66  percent). Now, Karlovic is averaging almost three aces more per match than Isner, but doesn't Isner's significantly better percentage suggest that he's a more dangerous and effective server?

Well, no. The key there is how closely packed the men are in first-serve conversion rate. Only two are at or above the magical 70 percent mark, but 11 men are at the 65 percent mark or above. So the simple list is deceptive. Isner is serving just three percentage points better than Karlovic. That's negligible.

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So let me ask you this, would you prefer Starace's serve, with that gaudy 72 percent service-conversion rate, or the serve of the No. 13 percentage server, Andy Roddick (65 percent)?

And in the good news-bad news department, Alexandr Dolgopolov is No. 12 in aces (320) but No. 64 in conversion rate, with a sorry 54 percent.

Biggest Surprise: Roger Federer is No. 14 on this list, at 64 percent. Given his smooth mechanics and No. 2 ranking in First Serve Points Won (we'll get to that), this tells me that he really goes for it with that first serve (he's also No. 11 on the ace production list). But again, 45 men are serving between 60 and 70 percent.