Current British number one Watson , 23 , saved four match points .
Was unable to avoid a 6 - 3 2 - 6 6 - 3 loss to former world number one Jelena Jankovic .
Current British number one Watson , 23 , saved four match points but was unable to avoid a 6 - 3 2 - 6 6 - 3 loss to former world number one Jelena Jankovic .