Top seed in the men's draw is world No 1 and two-time reigning champion Novak Djokovic, with Roger Federer second, David Ferrer fourth and Tomas Berdych fifth. Rafa Nadal, the world No 4, pulled out of the tournament last week through illness.
The top women's seed is Victoria Azarenka, followed by Maria Sharapova, Serena Williams, Agnieszka Radwanska and Angelique Kerber, matching the WTA world rankings.
The Australian Open takes places between January 14-27.
O'Sullivan upsets UCD
BASKETBALL: Ciaran O'Sullivan broke UCD Marian hearts with a last-gasp basket that saved the title-chasing UCC Demons' blushes.
Having parted company with John Galvin, Marian played without an American, but it didn't stop them racing into an early 13-point lead. The Cork side fought back, but Conor Meaney appeared to have stolen victory with 23 seconds to go, only for O'Sullivan to secure a 78-77 win. League leaders UL Eagles returned to winning ways by beating Moycullen 91-73.
Neptune saw off Dublin Inter by 77-65, while DCU Saints took the spoils (65-61) in their Dublin derby against Killester. In the Women's Superleague, Glanmire kept pace with UL Huskies as they overcame Killester 71-38 on Saturday.
The champions hit back to return to the top of the table with a 58-40 win over Meteors yesterday.
Lance could risk perjury
CYCLING: Lance Armstrong is considering making a public confession about using banned drugs and blood transfusions because he wants to compete again.
But the admission would have serious legal repercussions including a possible charge of perjury.
The New York Times, citing anonymous sources, reported that Armstrong has told associates he is thinking about the move
Bunting pushed to limit
DARTS: Top seed Stephen Bunting went to five sets before winning his BDO World Championship opener with Jamie Wilson yesterday.
The 27-year-old was a 3-2 winner, eventually coming through having trailed 2-1 at one stage.
Earlier in the day, second seed Martin Adams was knocked out 3-2 by Dutch teenage debutant Jimmy Hendricks, while Steve Douglas beat Gary Stone less than a month after suffering a heart attack.
NFL Play-off - Wild Card Play-offs: Baltimore 24 Indianapolis 9, Washington 14 Seattle 24
NBA: Toronto 92 Oklahoma City 104, Miami 99 Washington 71, Detriot 101 Charlotte 108, Phoenix 81 Memphis 92, LA Lakers 105 Denver 112.