Competitors take their positions for the start of the men's over 80s 200 meters at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Australian Jack Mathieson, aged 91, who has just finished the 800 meter freestyle, looks on as swimmers for the next race leave the blocks at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Athletes compete in the 2,000 meters steeplechase final at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Santa Claus, aged 80, dives from the one-meter springboard during a training session at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Dorothy De Low, aged 99, competes in the table-tennis rounds at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Reg Trewin, 101, the oldest competitor in the World Masters games, takes part in the lawn bowling event. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Australian Jack Mathieson, aged 91, shortly after swimming the 800 meters freestyle at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

A competitor in the over 80s category throws the hammer at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Ruth Frith, aged 100, competes in the throws pentathlon at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Santa Claus, aged 80, swims in the 800 meter freestyle at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Virginia Hoover (Canada) dives during the three-meter springboard event at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

Bruce Gallagher, at 75 the oldest rugby union competitor, is clapped off at full time after a match at the World Masters Games. The World Masters Games, held every four years, is the world's largest multi-sport event, with mature competitors from across the globe taking part in 28 different sports. The 2009 games in Sydney attracted 28,292 participants, two of them over 100 years old.

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