Reuters Sports News Summary

Following is a summary of current sports news briefs.

NFL's Junior Seau had brain disease from blows to head

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Djokovic starts Australian Open defence against Mathieu

MELBOURNE (Reuters) - World number one Novak Djokovic will kick off the defence of his Australian Open title with a first round tie against unseeded Frenchman Paul-Henri Mathieu after the draw was made for the first grand slam of the season on Friday. Seeking a hat-trick of titles, Djokovic has a relatively smooth draw in the tournament starting at Melbourne Park on Monday until the top seed faces a potentially dangerous quarter-final against fifth-seeded Czech Tomas Berdych.

49ers' Kaepernick move gets test against Packers 2013-01-11T005152Z_1_BRE90A00W_RTROPTC_0_US-NFL-PLAYOFFS-49ERS. XML () -

MLB, players agree to expand drug testing 2013-01-11T020602Z_4_BRE90917V_RTROPTC_0_US-BASEBALL-DRUGS.XML () -

Piercy sets early pace at Waialae

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Mularkey fired as Jaguars head coach 2013-01-10T181653Z_2_BRE9090X1_RTROPTC_0_US-NFL-JAGUARS-MULARKE Y.XML () -

Manning puts winning streaks on line against Ravens 2013-01-10T233026Z_1_BRE9091CF_RTROPTC_0_US-NFL-PLAYOFFS-BRONCO S.XML () -

Steelers cut Rainey after domestic violence arrest 2013-01-10T234929Z_1_BRE9091CW_RTROPTC_0_US-NFL-STEELERS-RAINEY .XML () -

Competitive fire will burn until grave, says O'Meara, 55

DUBAI (Reuters) - Twice major champion Mark O'Meara said his will to win was as strong as ever after the 55-year-old American announced he would compete at this month's Dubai Desert Classic. O'Meara beat close friend and 14-times major winner Tiger Woods in 2004 to lift the Dubai title at the age of 47, becoming the oldest champion of the long-running Middle East event which has been a feature of the European Tour since 1989.

Putting masterclass puts Jaidee three clear in windy Durban

DURBAN (Reuters) - Thailand's Thongchai Jaidee wielded a hot putter as he fired a seven-under-par 65 in blustery conditions to seize a three-stroke lead after the first round of the Volvo Golf Champions on Thursday. British Open champion Ernie Els of South Africa and compatriot Louis Oosthuizen, the 2010 British Open winner, carded 68s to lie joint second while Briton Paul Lawrie was among seven players on three-under.