Forbes magazine recently released its 2008 "Celebrity 100" list of the most powerful celebrities based on a combination of four rankings, i.e. pay, Web hits, press mentions and TV/radio mentions. Tennis' top stars made the list again this year, but male golf stars Tiger Woods (number 2 on the list) who earned $115 million last year and Phil Mickelson (number 20) who earned $45 million last year beat out the tennis players on the list. Nonetheless, several tennis players did make the list...

- Roger Federer is 23rd with $35 million in earnings last year ($10 million in prize money and $25 million in off-court income). Federer did rank second in the press rankings.

- Maria Sharapova is 61st earning $26 million on court and off last year. Sharapova's endorsements include: Nike, Colgate-Palmolive, Pepsi, Sony, Canon, Tag Heuer and Motorola.

- Serena Williams is 69th with $14 million in earnings last year including a new $2 million endorsement with Hewlett-Packard.

- Justine Henin, who recently retired, is 81st with $12.5 million including $5 million in prize money last year.

In an indication of the popularity of women's professional tennis players, Maria Sharapova, Serena Williams and Justine Henin outranked the top female golfers on the list, i.e. Lorena Ochoa who is 88th and earned $10 million and Annika Sorenstam who is 93rd and earned $11 million.