With next year's calendar currently set a marathon 22-races, Ross Brawn has revealed Mercedes could rotate their staff.
There are concerns about how next season's calendar could impact team personnel as the calendar will go beyond the 20 races that many have put down as the maximum.
However, it is not just the grands prix as there is also pre-season testing to take into account as well as four in-season outings.
"I think 22 races will definitely be the point at which we start rotating," Brawn told Sky Sports F1.
"It's not just 22 races; there's four tests as well and the pre-season tests start four weeks earlier than they have previously.
"We're testing in January and...
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