It was unexpected result everyone including me thought that Serena would win this in straight sets! But Angelique Kerber had other ideas and her serve and return of serve is what won her the match.
Angelique's serve was reasonably impressive and her never give up attitude was incredible! Whereas Serena lacked match fitness and found it difficult to stay in points.
So I believe that Angelique was the rightful winner and Serena lack of matches plus pressure of breaking Steffi Graf's 22 Grand Slams title is making even harder for Serena to concentrate.
Elsewhere in the Women's draw British/Hungarian player Johanna Konta played well and reached the quarters finals and I am sure she has won some tier one titles then she will have a realistic chance of winning a Grand Slam.
Whereas it was another disappointing Australian Open for Heather Watson an as she went out in the first round again.
I really think for Heather this her make or break year and even for retain her become British number one is going to be a mammoth task. However maybe possible but is really going to require to have a complete change of mindset.