If the maths is correct on Live Rankings, then Jamie and Bruno have qualified for the O2 this year (at least one Brit will be there then).
1 ukasz Kubot 35.2 POL1 6830 - +10 US Open R64 - 6910 8820
Marcelo Melo 33.9 BRA1
2 Henri Kontinen 27.1 FIN1 4940 - +10 US Open R64 - 5020 6930
John Peers 29 AUS1
3 Nicolas Mahut 35.5 FRA1 4225 - +10 US Open R64 - 4305 6215
Pierre Hugues Herbert 26.4 FRA2
4 Jamie Murray 31.5 GBR1 3810 - +10 US Open R64 - 3890 5800
Bruno Soares 35.4 BRA2
World Tour Finals Qualification Cut 3755
I guess the ATP will announce these qualifiers post US Open, when Bryan and Bryan may join them. Well done to Jamie and Bruno. Lets hope they go far in NYC.
I would imagine in practice Jamie & Bruno have already made the 02. But 3755 strikes me as a low official cut-off at this stage.
As you suggest the Bryans at #5 in the race aren't far behind Jamie & Bruno so can overtake them with bits and bobs. Then if I play around with just the winner and runner-up points from the US Open, Shanghai and Paris to pairs #6 to #9 I can get them past Jamie & Bruno too. It may be to do with what these pairs have counting already restricting what they can add net from these tournaments but with #10 and #11 not much further behind #9 I am far from convinced.
Not sure it's worth looking into further though because as I say in practice 3755 points will very probably end up being more than enough whatever.
The ATP are pretty on the ball with these calculations so I will believe pairs have qualified for definite if and when they announce it.
Oh and by the way the live-tennis.eu site continually suggests R1 losers in doubles mandatories get 10 points. They don't, they get zero. Given they keep having to reverse these for R1 losers ( or at least the ATP end up with 10 less points than these projections ) you would kind of think the message might have got through a long time ago.
So given such as this and other errors they make, if it's just live-tennis.eu that's giving that doubles 02 cut-off, even more reason for doubt.
Duran & Neal Skupski serve out a long game including saving 4 break points ( isn't Ad fun ?! ) to go set all with (2) Kubot & Melo. The Skupskis of course gave Kubot & Melo a pretty competitive QF at Wimbledon although ultimately 3 straight sets. This best of 3 so one more set needed.
3-6 6-3
Meantime (4) Murray & Soares have levelled their match, having been a break down.
Yes, that was an odd score ... especially as I don't particularly think Tommy Paul has a stellar record in doubles play, but Johnson does. Curious.
Very difficult first round draw out of the way for Murray and Soares - and a very decent showing by Mr Skupski and his partner. Wish they could have won!
Was kind of hoping that Ken & The Milkman would get in for either Kyrgios the Odious & Matt Reid, given the former's shoulder problem & meek surrender to The Milkman in their first round match, or Vasek Pospisil & Nenad Zimonjic, given that the Canadian retired after losing the first set of his first round match to Fernando Verdasco by 2-6, but no such luck with the first (the Aussies actually beat Sousa & Struff in three!) & no sign of a change of personnel yet in the second. *pray*