It is possible.
"So, here are the options for Roger in Cincy to remain #1 until the USO:
- If ND wins both tournaments (11,670), Roger needs to reach the final (11,765)
- If ND has one win and one final (11,270), Roger just needs to reach the QF (11,345)
- If ND has two finals, no win (10,870), Rogers remains # 1 regardless of his result."
In other words the chances of it happening is 1%. Thanks for the info. Djoker isn't winning both events that much is pretty sure if Murray is playing. Roger will probably win Cincy anyway.