Soldato
Very unlikely Ham will go on to mediums(I presume he started on them), pitting before the 6th lap means both sets have go go 25-27 laps(not quite sure exactly which lap they stopped), that has 2 x hards written all over it in these conditions.
Well it was said that the hards had been wearing quicker and not lasting as long as the mediums.
BBC commentary though, so take that with a pinch of salt.