As well as the title , Serena regained the world number one ranking from Germany 's Angelique Kerber - .
Serena did not know that was on the line as Serena 's coach , Patrick Mouratoglou , kept it Serena her .
As well as the title , Serena regained the world number one ranking from Germany 's Angelique Kerber - but she did not know that was on the line as her coach , Patrick Mouratoglou , kept it from her .