Possibilities for the rest of round 1:

Andy is safe at 18 for the round. Hewitt could get back within 15 points but no one can overtake.

So the What if for round 2?:

If Andy were to win round 2 he'd have 1345 points. And would overtake nobody

In fact, he needs to reach the fourth round to gain any places for certain (Baghdatis).

I'll do a full what if for all eventualities tomorrow.

Both Chela and Hewitt (threat numbers 2 and 1 respectively) won Hewitt's back to 25 points behind Andy

The Updated Table is posted here (on britishtennis.net)

Interim day 2 update

Chela and Monaco advance. Chela's now just 55 behind. Karlovic loses. Ljubicic advances off the top.

I hadn't noticed!!! All time great!!

What if...

...Andy were to win the US open? (start with the most likely thing ). He would have 2270 points. He would definitely overtake Ferrer, Youzhny, Moya, Baghdatis. He might overtake Gonzalez (out before r4), Blake (r4), Berdych (final), Ljubicic (final), Robredo (final), Gasquet (final), Haas(final), Canas (final). He could be overtaken by no one.
Only one other person can get to the final leaving Andy with:
best case: 6 (+13)
worst case: 9 (+10)

...Andy were to lose in the final? He would have 1970 points. He would definitely overtake Baghdatis. He might overtake Berdych(out before qf), Moya(final), Youzhny(final), Ferrer(final), Ljubicic(out before qf), Robredo(qf), Gasquet(semis), Haas(semis) and Canas(semis). He could be overtaken by hewitt, Chela, Monaco, Nalbandian, Safin and Almagro(all would need to win) 
best case: 8(+11)
worst csae: 14 (+5)

...Andy were to lose in the semis? He would have 1720 points. He would definitely overtake Baghdatis. He might overtake Haas(out before r4), Gasquet(r4), Canas(r4), Ferrer(qf), Youzhny(sf), Moya(sf). He could be overtaken by hewitt(final), Chela(final), Monaco(final), Nalbandian(final), Safin(win), Almagro(win), Tursunov(win), Starace(win), Melzer(win), and everyone down to Santoro(win). 

best case: 11 (+8)
worst case: 17(+2)

...Andy were to lose in the quarters? He would have 1520 points. He would definitely overtake Baghdatis. He might overtake Youzhny(r4), Moya(r4). He could be overtaken by...to be continued (at the end of round two when there are slightly fewer people to list otherwise it'll be impossible to understand. (same for the rest below)
best case: 15 (+4)
worst case: 17(+2)

...Andy were to lose in the fourth round? He would have 1420 points. He would definitely overtake Baghdatis. He might overtake Moya(r3).
best case: 16 (+3)
worst case: 18(+1)

...Andy were to lose in the third round? He would have 1345 points. He would definitely overtake no one. He might overtake no one.
best case: 18 (+1)
worst case: 18(+1)

...Andy were to lose in the second round? He would have 1305 points. He would definitely overtake no one. He might overtake no one.
best case: 18 (+1)
worst case: 18(+1)

I know where my evil thoughts are today.  Moya is 60 points ahead of Andy, and has yet to play his second round match. So I have my wax model and pins at the ready to try and stop him before he gets any more points

I'll worry about people overtaking Andy if and when he gets knocked out