There are 4 players with a chance to win both the LPGA and LET ROY titles.  How they do in the 1st half of the season on both tours will help determine the outcome of both races.  Here's the bottom line from today's Mostly Harmless post:

So much depends on how the LPGA and LET rookies play in the 1st half of the season on both tours. Anna Nordqvist won LET ROY playing in only 6 events in 2009, but I can't see anyone who plays in fewer than 8 having a legitimate chance in 2010, unless they play phenomenally at the Evian Masters and Women's British Open. The time to reassess your worldwide schedule is after those events: do you concentrate on making the LPGA's top 50, qualifying for their Asian swing, and giving yourself a chance in their ROY race? Or do you focus on winning LET ROY and pretty much forget the LPGA until the Tour Championship? Or do you try to figure out how to stay alive in both ROY races somehow?