The Road To Singapore goes through Sydney and Hobart this week. What are the toughest first round match-ups? Who's on the verge of their 500th career match win? All that and more right here...
WTA Staff

Every week on we'll bring you 10 of the most important things to know - who's playing, where, upcoming milestones... this week the Road To Singapore goes through Sydney and Hobart.

~ The Road To Singapore goes into Week 2 this week, with the Apia International Sydney (3915 miles/6300 km from Singapore) and the Hobart International (4063 miles/6538 km from Singapore).

~ Six Top 10 players are in action this week and they're all in Sydney (Agnieszka Radwanska, Petra Kvitova, Sara Errani, Jelena Jankovic, Angelique Kerber and Caroline Wozniacki). Radwanska, Kvitova and Wozniacki are playing their first WTA-level events of the year - Radwanska and Kvitova played at the Hopman Cup last week, while Wozniacki had to pull out of Brisbane with a shoulder injury.

~ 2013's breakthrough star - Simona Halep - is also playing her first WTA-level event of the year in Sydney. Halep won her first six WTA titles last year and finished No.11 on the year-end rankings.

~ Svetlana Kuznetsova finished 2013 with 499 career match wins and will go for her 500th career match win in the first round of Sydney (she plays Varvara Lepchenko). She would be the 10th active player to hit 500 after Venus Williams, Serena Williams, Tamarine Tanasugarn, Francesca Schiavone, Nadia Petrova, Jelena Jankovic, Flavia Pennetta, Daniela Hantuchova and Maria Sharapova.

~ Toughest first round draw in Sydney: Sara Errani against Roberta Vinci.

~ The doubles field is also packed in Sydney, with three-time Grand Slam champions Sara Errani and Roberta Vinci the No.1 seeds, 2011 Wimbledon champions Kveta Peschke and Katarina Srebotnik the No.2 seeds and Tokyo and Beijing champions Cara Black and Sania Mirza the No.3 seeds.

~ Sam Stosur headlines as the No.1 seed in Hobart, a departure from her usual pre-Australian Open schedule - she hasn't played anything but Sydney right before the Australian Open since 2004. The Aussie won 12 of her last 15 matches of 2013 and reached back-to-back finals in Moscow and Sofia.

~ Toughest first round draw in Hobart: Elena Vesnina against Monica Puig.

~ The Australian Open doesn't start until a week from Monday but there's a lot going on this week for the first Grand Slam tournament of the year - Monday's rankings will determine the seedings, the qualifying draw takes place starting on Wednesday and the main draw ceremony is on Friday.

~ Speaking of rankings, the most significant change on Monday will see Li Na dip from No.3 to No.4 and Maria Sharapova move from No.4 to No.3 after her semifinal showing in Brisbane.