A recent Deuce Magazine article takes a close look at the career of James Blake. He’s been America’s second-ranked male tennis player for the past seven years. However, he’s yet to win a Grand Slam. In the piece, Andre Agassi and Rafael Nadal critique Blake’s game, as well as offer insight as to why he hasn’t taken it to the next level.

What’s always been tricky in that department is Blake’s playing style. Blake’s A-game is a sizzling set of big forehands, aggressive returns, extraordinary movement and enough shotmaking for tons of highlight reels. Few players in the past 20 years have better personified the notion of a dangerous player. Watch Blake versus the likes of Roger Federer and Rafael Nadal and you’ll see a man extremely capable of going toe-to-toe with giants. As Nadal said earlier this year after earning his first win over Blake in four tries at the ATP Masters Series event in Indian Wells, “He’s a very difficult player for me to play against… very aggressive player all the time.”

Though Blake is pleased with the consistency of his play in 2008 – he’s maintained a Top 10 ranking all year – there have also been some beguiling losses, including a five-setter in the second round of Wimbledon versus Rainer Schuettler and defeats in finals to first-time winners Kei Nishikori and Marcel Granollers. “This year’s been a little strange,” says Blake. “I’ve had some ups and downs.”

It’s astonishing that Blake used to dominate Nadal a few years back. He also beat Federer in Beijing before a heart-breaking loss to Fernando Gonzalez, which would have at least guaranteed him a bronze medal. At 29 years-old, Blake’s years are numbered on the ATP Tour. Hopefully both he and Andy Roddick will be prepared for the Australian Open in January. As another year goes by without a dominant male American player, one begins to wonder if legends such as Jimmy Connors, John McEnroe, and Pete Sampras were just Europeans with really good Yankee accents.

The record book will show that Roger Federer won the 2008 U.S. Open Men’s Championship over Andy Murray. But something is missing. His dominance in the sport hasn’t been noticeable this year. Let’s just face it; Roger Federer is not Roger Federer anymore.

Wait a minute, a terrible year? How many players on the men’s tour would take a semifinal appearance at the Australian Open, two finals appearances at the French Open and Wimbledon, and a Grand Slam victory at the U.S. Open, all in the same year?

Is Federer dominating? No. We are not used to seeing him struggle in the early rounds. What use to be a brisk workout for him has now become nervy five-set encounter. Federer’s brilliance ultimately prevails, but never once does he look like he’s in control of the match.

So what has changed in his game? Well, Federer is not setting up balls for the kill shot that usually keeps his opponents’ off-balance. Balls that have rocketed off his racket in the past are now just dribbling over the net as a return or an unimpressive point. Instead of ripping through sets, he is now winning a series of mini-marathons.

The last set of his semi-final match against Novak Djokovic on Saturday was reminiscent of the old Federer. He regained his cross-court backhand that, in years past, would go by his opponent like a shortstop reaching for a line drive off a hitter’s bat.

Maybe Federer won’t return to the #1 ranking, and maybe he’s not a sure thing anymore on the tour. His dominance is slipping. But Federer did remind everyone this weekend at Flushing that he still has a few bullets left in his racket. Was this a return to greatness or just a brief glimpse of the past?

Only time will tell.