Next up on Arthur Ashe we have Agnieszka Radwanska against the 18-year-old Ana Konjuh.

RADWANSKA 4-6 4-6 KONJUH: GAME, SET, MATCH! Konjuh starts with another huge first serve before something goes wrong with the sound system on serve and it scares the life out of her! Great retrieving from Radwanska forces Konjuh to net but another big serve edges her ahead again. A fabulous backhand winner up the line brings two match points and Radwanska nets a second serve and Ana Konjah becomes the first Croatian woman to reach the quarter finals of a major since Iva Majoli. At 18 years of age!

RADWANSKA 4-6 4-5 KONJUH: BREAK! Konjuh finds the line with a brilliant angle on a backhand return winner and then forces Radwanska to net on the backhand. A forehand crosscourt winner brings three break points but a terrible drop shot attempt bounces before the net! Not the best choice of shot. It matters not as a huge backhand and put away takes the break. She will serve for the biggest win of her life. No pressure!

RADWANSKA 4-6 4-4 KONJUH: Konjuh continues to pound down big serves and groundies but the consistency of Radwanska is starting to force the errors. The Pole sneaks to 15-30 before a first serve finds its mark. Two more big swings bring game point and an ace wraps up a gutsy hold.

Radwanska still very much in this match.

RADWANSKA 4-6 4-3 KONJUH: A brilliant half volley backhand winner from the baseline is Andy Murray like from Konjuh but she then nets on the opposite flank before sending a return long. Great defence from Radwanska and she holds to 15.

RADWANSKA 4-6 3-3 KONJUH: More big serving and big hitting for Konjuh helps to a quick hold to 15. Four first serves in. Great stuff.

RADWANSKA 4-6 3-2 KONJUH: A second Radwanska double gives Konjuh hope at 30-15 but she then nets a makeable before a forehand dips in. A lob goes long and Radwanska digs in to edge ahead again.

RADWANSKA 4-6 2-2 KONJUH: Good variation on the serve takes Konjuh to a comfortable hold to 15. 23 first serves in now.

Ana Konjuh in action.

RADWANSKA 4-6 2-1 KONJUH: Radwanska needing all her legendary scampering and defensive qualities to cope with Konjuh’s power, which she does so admirably before throwing in a first double. It doesn’t stop the Pole from holding with a forehand winner into the corner. Could be another long one!

RADWANSKA 4-6 1-1 KONJUH: Konjuh squirts a backhand wide but then finds the corner off the same wing with power and accuracy. Another big forehand winner puts the Croat ahead in the game at 30-15 before a drive volley and ace gets the job done.

RADWANSKA 4-6 1-0 KONJUH: Konjuh continues to blaze away, thumping a backhand return winner. Radwanska then uses her trademark angles for an easy put away before Konjuh nets a return and twice hits long.

RADWANSKA 4-6 KONJUH: SET! Konjuh puts away a forehand winner to open but then misses a backhand volley as Radwanska makes her play one more shot. The Pole then nets a forehand return before an ace brings two set points. Radwanska runs down another poor drop shot and Konjah then nets on the backhand as the game goes to deuce. A deep return brings Radwanska a break point but an ace up the tee saves the day. Another huge serve and drive volley put away brings a third set point and Radwanska then hits long as the set goes to Konjah.

Ana Konjuh in action.

RADWANSKA 4-5 KONJUH: One drop shot too many from Konjuh and Radwanska easily runs it down en route to a more comfortable love hold. Pressure back on the Croat to serve it out.

RADWANSKA 3-5 KONJUH: Konjuh still looking calm, blazing a forehand up the line to go 30-0 up before another punishing backhand earns three game points. This 18-year-old looking very powerful on her groundies but nets a drop shot that would have been a winner. But Radwanska hits wide and Konjuh holds to consolidate the break.

RADWANSKA 3-4 KONJUH: BREAK! The Croat is looking confident as she blasts successive backhand return winners to open before missing with a forehand return. A crosscourt forehand pass brings two break points but Radwanska responds with a big serve and great angle under pressure. A fabulous backhand angle brings another break point before a forehand hits the tape and lands the wrong side of the net. Another crunching forehand brings a fourth break point and she does break through as Radwanska hits the net and the ball drops wide.