Mercedes driver Lewis Hamilton qualified sixth for the Mexico City Grand Prix on Saturday. It was another underwhelming display from the seven-time world champion, but at least a return to the front. Hamilton had suffered a Q1 exit in the United States in the first leg of the triple-header before spinning out three laps into the race. This, then, was a more conventional session for the 39-year-old. Instead, it was Oscar Piastri and Sergio Perez who were eliminated at the first hurdle. The absence of one McLaren and one Red Bull made Hamilton’s life easier in Q3. But he was still the slowest of…