If ever there was a track where you may expect someone to genuinely knock Mercedes off its perch at the top of the Formula 1 tree that circuit would surely be Monaco.
After all, it is here, around the famous streets of Monte Carlo, where pure horsepower counts for far less than it does elsewhere in F1. Given Mercedes has dominated largely (though not solely) because of the superiority of its engine under the V6 hybrid turbo rules, Monaco is the place where it is naturally most vulnerable to attack.
Pre-season many would expect that challenge, if it came, to come from Ferrari. But Ferrari has struggled to string a weekend together so far, sometimes fast on Friday then losing ground when it counts, other times slow on Friday and not quite managing to recover in time.