Re: 2019 Porsche Race to China
The top 4 are pretty much there, and Bertens is not someone who could potential implode like say Osaka, so you'd have to think Barty, Halep, Pliskova, Kvitova and Bertens would be all be nailed on. Osaka still more than likely especially with the hard courts returning, so there's probably just 2 more spots available, Bencic in a reasonably strong position at the moment, but certainly not a safe bet and it's anyone's guess after that. I assume Serena won't play enough to get herself into realistic contention, and even if she won the US Open, she'd probably withdraw, despite her saying she'd like to play in China this year.
Not my favourite line up, and a little bit boring to me, but those top 5 have been, and are, the most consistent. I must say I much preferred a couple of years ago when you had the likes of Muguruza and Ostapenko there, but Mugu is badly out of sorts and Ostapenko is more in danger of slipping out of the top 100 than qualifying for this. Wouldn't mind Svitolina getting the chance to defend her title either, and Konta potentially getting in would be great for British tennis. It would also be nice if one of the youngsters had a strong second half of the season and forced their way in.