There were words had back in Japan as the two Mercedes almost collided at Suzuka but this could see the inter-team rivalry explode.
If you're Toto Wolff, the team principal of the Silver Arrows, you will be calling the seven-time world champion and the one-time race winner into your office first thing Monday morning for a stern meeting.
Whether it was a racing incident or a driver's fault, the very first rule of motor racing at any level is don't hit your team-mate.
Turn one can be difficult to negotiate when it is super close but that excuse won't fly with Wolff and Mercedes.
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