definitely one of the biggest ball Strikers on the tour and our whole game is really designed behind the serve and looking for that forand as much as possible oh that's just so clever and even Madison Keys applauds that one a lot of stinker roonies no she doesn't she's not going to give you a lot of free point she's got great feel on that lob overall that's definitely something that she uses a lot in on the doubles Court as well something that's very effective three straight breaks of sered to start this fourth round match that's a perfect example I think that point is what Mertens can do so well is throw up that high ball and she's so [Applause] comfortable that's well done draws it back to [Applause] deuce and again when Maddie was young and she had a lot of early success she still got maligned you know on the internet you know and I think part of it is being outspoken about it yeah being open about it I think that's helped her she's got a big heart oh man Mertens she's just so clever a that's too good and Marts is the type that likes that Target so that approach shot has to be so accurate and but it was a good approach but look I mean when she tried a little bit too far back look how far back she that's what I'm saying I think if she got tighter to the net she'd have a very pleasant experience [Applause] both now broken three times [Applause] that was better [Applause] switch jams uh 4 [Applause] two what a drive 52 but it's not like she gets a good read on it that often got it well played wide serve a little bit more often I do think that she could go for the angles a little bit more instead of always just flatten hard I like that ball right there a little higher heavier spin that one is the one that Mertens absolutely loves is she can tactically Advantage definitely yeah you talked about that right in the beginning of this thing and even though that's going into the strength [Applause] first serve percentage pretty low right now for Mertens just 35% in this set down 31 in the third against the Ukrainian Marta kosek she got past the her that's so good oh wow that's what I mean that she goes and does that that's a wow broken at 15 we are going [Applause] three so that is so good that's such great feel oh what a comeback from love 40 and now is game point just hit her way out of trouble didn't [Applause] she it's a great [Applause] l oh that whole thing that whole thing prob for her [Applause] [Applause] come [Applause] on badison Keys figures out a way to win that point this one would hurt too boy that's a brutal game nothing but from Madison Keys [Applause] [Applause] got her another remarkable hold from at least say Mertens okay that's it and they say merens has just knocked out the 14th seed Madison Keys Ladi she has such knowledge of the court and of her opponent