You must have misinterpretated the tweets.. I read every single tweet with the word Ivanovic in it, and all Ana said in the post Fed Cup interview is that she will try to get stronger.. the same she has been saying in all her interviews lately. Then a couple of journalists, that werent even there, wrote tweets wondering if Ana is finally thinking of putting on weight, since that was what her coaches have been telling her for years. But there was NO mention of Nigel saying it.. or even of Ana saying she wants to gain weight.. all she said is that she needs to get stronger, which isn't necessarily the same... and those journalists were actually referring to Van Grichen getting fired for telling her she was too skinny, which was detrimental to her game.
I must have read one of these. I remember there being something about her coaches having told her to gain strength.
Anyways, she definitely needs to get a little more upper body strength in my opinion, just so she has easy power.