Originally Posted by JIMCHI
No, you do NOT have to use a Oneworld award. The All Partner Award rules state "Open jaws are allowed between regions/zones as long as the higher mileage award is used". So you can do this routing for 75,000 miles in economy, 125,000 miles for business, or 145,000 for first class.
Please let me know where to find the complete list of rules, including the one you have quoted. All I can find is the following:
"The airline awards require mileage region based on regions of travel and are designed for members traveling only between specific cities within specific regions such as between Chicago and Paris. The Oneworld multi-carrier awards require mileage based on the distance flown and are designed for members traveling either to multiple regions or to several different cities within a region."
Using the standard award and an open jaw for the OP's itinerary would save him 5000 miles in business class. Not so much, but there would be a sizeable difference with the economy and first awards.