Agnieszka Radwanska Remains Undefeated in 2013 as She Reaches Australian Open Quarterfinals

Australian Open - Women's Fourth Round

4 Agnieszka Radwanska d 13 Ana Ivanovic - 62 64

This is Aga's 3rd straight and 4th overall Qf at the AO: 0-3.

Something tells me she's going at least 1 match further this year.

Remember she won 2 tournaments coming into the Aussie.

In fact, she has yet to drop a set in 13 matches in 2013.

Post match: What can I say?

I'm just very happy I've been able to play at this very high level.

Already 13 matches not even losing a set -

I hope I can keep going for three more.

I wouldn't be mad at that.