These are my predictions for what it will be like come Monday before evening play (UK time) if everyone plays twice and sticks to the same person they have been posting so far:
Ian Chesterton 3
Sarah Jane Smith 13
Tegan Jovanka 3
Clara Oswald 15
Its harder to predict what would happen next as Ian and Tegan have 2 people each hurting them, but Sarah and Clara only have 1 person each hurting them so one round from each of us means that
Ian losses 4
Sarah losses 2
Tegan losses 4
and
Clara losses 2
and this gets doubled each day!
It will depend on who are the second two people to post on Monday evening (UK time), that hurt ether Ian or Tegan, so thats why its so difficult to call a prediction after that!
I would say that its likely that Sarah will do worse than Clara, but thats not certain at the moment, what is though is the girls will be the top 2!