A second a lap slower than your teammate in identical machinery isn't a bad day — it's a red flag.
Nineteen laps. Same car. Same tyres. Same track conditions. Isack Hadjar finished 22 seconds behind Max Verstappen.
That's not variance. That's a chasm.
Let's be precise about what happened here. This wasn't a sprint where strategy played out differently or one driver got caught in traffic. Both Red Bulls started on mediums. Both ran to the flag. No stops. No safety cars that reshuffled the deck. Verstappen started fifth, Hadjar ninth — four places apart. They finished fifth and ninth. Four places apart.
The only variable was the driver. And over 19 laps, Hadjar lost more than a second per lap to his teammate. Not to Norris in the dominant McLaren. Not to Leclerc hunting down a podium. To the guy in the identical car sitting four positions up the road.
Here's what makes this particularly damning: Verstappen's tyres weren't getting faster. His degradation curve shows a 0.054-second-per-lap drop-off — the mediums were going away under him. Hadjar's degradation? Negative. His tyres were theoretically improving as the race went on, which in reality means he wasn't pushing them hard enough to generate proper wear.
He wasn't managing tyres better. He was just slower. And when you're already a second off the pace, being kind to tyres that aren't the limiting factor isn't racecraft. It's irrelevance.
Two track limits violations for Hadjar — both at Turn 11, both late in the race when he was already out of contention. Verstappen picked up one. That's not the story here, but it's a symptom. When you're pushing to stay within a second of your teammate and failing, you start clipping kerbs you shouldn't.
The argument from Red Bull will be that Hadjar is still learning, that this is only Round 4, that he's a development project and the team knew what they were signing up for. Fine. But Miami in the heat is exactly the kind of race where a fast driver shows flashes even if the results aren't there yet. Hadjar didn't show flashes. He showed a 0.994-second average lap time deficit over a sprint distance where there's no time to settle in or find a rhythm. You either have the pace or you don't.
Red Bull has historically been ruthless about promoting talent and equally ruthless about moving on when it doesn't work. Hadjar isn't driving himself out of a seat with one bad sprint, but he's not building a case to keep it either.
Canada is next. Watch how quickly the gap opens in the first stint. If it looks anything like Miami, Red Bull will be watching too — and they won't need telemetry to see the problem.