Ferrari had the edge in Bahrain and Australia with pole and the win, while Red Bull enjoying success in Saudi Arabia and now at Imola.
Being on the right compound for the conditions at the correct time will be critical and could well define the outcome of the afternoon's proceedings.
McLaren also announced that it was to reacquire the shares in its team from Mercedes-Benz McLaren's partnership with Mercedes was reported to have started to sour with the road car project and tough F1 championships which included McLaren being found guilty of.
The sport's debut season, , saw eighteen teams compete, but due to high costs, many dropped out quickly.
Yellow Indicates a hazard on or near the track waved yellows indicate a hazard on the track, frozen yellows indicate a hazard near the track.
The different compounds have different levels of performance and choosing when to use which compound is a key tactical decision to make.