How else can you put it: Serena Williams is too good for the field right now. Here she is in the final of the U.S. Open and she has hardly been challenged. Not even in Friday's semifinal against No. 10 seed Sara Errani was she pushed.

Serena moved into the final playing nearly flawless and utterly dominant tennis on Friday. After watching Victoria Azarenka go to the limit to beat Maria Sharapova in the other semifinal, Serena appeared interested in getting the most rest possible before Saturday night's final.

U.S. Open Day 12
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She took out Errani with ease 6-1, 6-2 and is back in the U.S. Open final for the second straight year. She finished with 38 winners to only 21 unforced errors. She converted on four of 10 break point chances. She won more than 90 percent of his first serve points, including eight by way of aces.

Put it another way, she was in a class of her own. She has been in a class of her own all summer long, a run that included a 6-1, 6-0 beat down of Sharapova in the Summer Olympics gold-medal match at Wimbledon.

Now before you crown Serena with her fourth U.S. Open title and 15th Grand Slam title overall, remember that on Saturday she has to play the No. 1-ranked player in the world. Of course that's just her ranking. It's almost impossible not to see Serena as the No. 1 player;the rankings have never quite liked her and her schedule very much.

Then again, Serena has not had many problems with Azarenka, especially this year. They have met 10 times; Serena has won nine of the matches. Of those nine wins, one of them came at the U.S. Open last year and three times this year including the London Olympics.

Azarenka is a great player. You don't win a major and rise to No. 1 in the world without being great. But can her greatest compete with Serena's greatest? Serena has to help her out a bit; losing her cool or losing her touch would help.

Right now, Serena is just too good. You know she's playing well when she thinks as much, which she said earlier this week at the U.S. Open. She usually will always find something she doesn't like -- or a lot of somethings -- but even that isn't happening. She's playing her absolute best.

We have one more day to wait and see it proven, but Serena at her best is just too good.