Roger Federer 23rd on The Celebrity 100 by Forbes

Roger Federer is ranked 23rd on The Celebrity 100 by Forbes - a rating reflecting the influence of personalities worldwide. Well established in the list, he has improved from rank 38 in 2007.

The world's top tennis player won $10 million in prize money in 2007—and another three grand slams. He recently signed up for 10 more years with Nike, one of the biggest deals ever in tennis.

The trio heading the 2008 ranking by the US magazine "Forbes" are television host Oprah Winfrey, golfer Tiger Woods and actress Angelina Jolie. Considering tennis players, the list looks as follows:

Roger Federer- (rank: 23) The world's top tennis player won $10 million in prize money in 2007—and another three grand slams. He recently signed up for 10 more years with Nike, one of the biggest deals ever in tennis.

Maria Sharapova- (rank: 61) After the recent sudden retirement of Justine Henin, Sharapova moved to the top of the WTA Tour rankings for the fourth time in her career. She won her third Grand Slam tournament at the Australian Open in January. In the past 12 months, she has renewed her endorsement deals with Canon and Tag Heuer, and she'll be getting double what they previously paid. She also has signed on to be a face of Sony. Also in her portfolio of global sponsors: Colgate-Palmolive, Motorola, Nike and Pepsi.

Serena Williams - (rank: 69) The younger Williams sister is back with three tournament wins so far in 2008 after chalking up only three wins in the three previous years combined. She signed a $2 million deal with Hewlett-Packard that adds to her hefty endorsement income, and she partners with Kraft, Nike and Wilson. Her $19 million in career prize money is the sixth highest among female tennis players.

Justine Henin - (rank: 81) Henin shocked the tennis world with her sudden retirement in May. She is the first Tour player to quit while ranked No. 1. She had a phenomenal 2007, winning 10 of the 14 tournaments she played in and became the first woman to snag $5 million in prize money in one season.

(source Roger Federer, Forbes, photo/AP Photo/Dmitry Lovetsky via Forbes)