In promises to be a strong weekend of tennis with three of the top four ranked players all in action.

One person told me, “The Serena thing wouldn’t be an issue in the NBA or NFL. We know there’s a lot on the line for the players, but the behavior from some of them is really getting out of hand. Her mistake was that she was on TV.”

Three-time champ Roger Federer is into the Basel quarterfinals after 6-3, 6-3 win over Andreas Seppi.

Another retirement puts a fresh Rafael Nadal into the final against Nikolay Davydenko.

Andy Roddick and Rafael Nadal both ripped in the ATP scheduling, but are they in the right to do so?

What’s happening in tennis right now? On the court, not much!

One day the WTA appears to have no depth, the next, more than enough depth.

The script at this point read that Federer breaks serve early in the fourth set and wins the U.S. Open. Del Potro had other ideas and saved break points in his first two service games of the fourth set. Another tiebreak was upon both players and del Potro took advantage of a Federer double fault to win again on a single mini-break. Despite saving a break point when serving at 2-0 in the fifth set, del Potro basically dominated the final frame of play.

Andy Murray has the tools to win a Grand Slam event, but he does face a tough question: “Should I stick with a generally effective strategy of counterpunching or change strategies by developing and using bigger shots?” Internal doubts arising from this quandary might be worse than just selecting one option and committing to it.

Just for fun, I am trying something different. As the 2009 hard court season heads toward the finish line, I came up with some hypothetical matches between former U.S. Open champions.