Ma vs Xu looks a good one. Don't know Ma's capabilities on clay, but both will surely be disappointed to draw each other aa they probably could have done well in this field. The likes of Xun, Han and the other Zhang might be currently higher ranked, but are not as good IMO.
Higher ranked than Ma anyway, Xu may be above a couple of them now.
That's a really good win for Zheng over Cepelova. Not really a surprise she won, but the scoreline of 6-2 6-1 is impressive. Awful result for Zhu though, she'd be hoping for at least a SF here, maybe even beating SaiSai as she's probably started the year better than her compatriot, but now there's guaranteed to be a Q in the semi final in the bottom half.
Can only really see the Ma/Lao winner in the top half stopping S Zhang, but we're probably in line for the top 2 seeds meeting in the final.
I San Antonio, TX, USA- Week of March 14th
II Bol, Croatia- Week of May 30th
III Dalian, China- Week of September 6th
IV Limoges, France- Week of November 14th
V Taipei, TPE- Week of November 14th
VI Honolulu, HI, USA- Week of November 21st