Roger Federer.

Roger Federer. Photo: Getty Images

Roger Federer has slipped to his lowest world tennis ranking in over a decade, losing his status as Switzerland's No.1 player to Australian Open champion Stanislas Wawrinka in the process.

Federer's semi-final exit at Melbourne Park cost the 17-time grand slam champion two spots on the ATP rankings released on Monday, dropping to world No.8.

The last time the 32-year-old featured that low was on October 28, 2002, before he won his first grand slam at Wimbledon in 2003.

Meanwhile Wawrinka soared five places to a career-high world No.3 following his maiden grand slam victory on Sunday night.

Losing Australian Open finalist Rafael Nadal retains the top spot, extending his points lead from No.2 Novak Djokovic who lost in the Open quarter-finals while defending the title.

Veteran Lleyton Hewitt remains Australia's top-ranked male after climbing two spots to No.41, while Bernard Tomic slipped eight places to 65th.

Tomic is now only the fourth highest-ranked Australian, behind Hewitt, Marinko Matosevic (55) and Mathew Ebden (61).

Teen star Nick Kyrgios improved his place on the rankings by 21 to 162nd, with good friend Thanasi Kokkinakis up 169 spots to No.401.

AAP