If Perez can stay ahead of Lewis Hamilton in the drivers' standings not only would it be his highest ever finish, but it would also represent the first time ever that Red Bull have sat one-two in the championship.
"Nothing has really fundamentally changed that much," Horner continued.
"He's got into a bit of a spiral and he needs to put the brakes on that, reset and use this period, the two weeks to come back in Austin, another Sprint weekend, and really attack it, do the best he can and extract the most out of himself.
"I think we really need to sit down with Checo because we know what he's capable of and he's not hitting that form at the moment. We desperately need him to find that form to keep this second place in the championship."
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