Petra's just horribly bad at the moment. There's nothing else to say.
No 1st serve. No 2nd serve. Too many DF's. Lazy court coverage. Terrible ROS and decision making; not taking advantage of sitter 2nd serves; hitting the ball wildly out (and all this against a young player, who wasn't playing lights out---again).
Petra also wasn't mentally strong, putting the player away when she had them down and defeated in/for the second set (up a break with a unconverted BP to put some distance between them). Where does it stop?
Kristina was decent, playing an all or nothing, very hit and miss game (decent Serve, with no groundies or ROS). But nothing groundbreaking. And I would say so if she was. Just another inexperienced ball bashing game, based off confidence and the home crowd. Nothing more. She's young, so let's see how she develops? She's got some pieces. Nonetheless, as soon as Kvitova got the break during the second set, Xtina started pressing (and all of a sudden started making more mistakes), but Kvitty played some very loose ROS when she could have went up a double break, and was even worse on her own serve, where she got broken, after she could have held to keep up a break. Congratulations to Mladenovic for toughening it out (even with Petra generosity).
Once Petra got broken in the 2nd set, you knew the match was over, as Petra would just have a slow, steady decline to a loss. And she did.
Onward to Doha and Dubai. SMH/LOL