The season was the first time that two four-time World Champions, Hamilton and Vettel, would be competing for a fifth title and was billed as the "Fight for Five" by journalists and fans. As with the season before, Ferrari and Vettel appeared to have the upper hand for much of the season, topping the standings until the half-way point. However, Vettel's season unraveled with a number of driver and mechanical errors, while Hamilton's run of six wins in seven in the latter half of the season saw Hamilton clinch the title in Mexico for a second year running as he set a new record for the most points scored in a season (408). During the season, Hamilton signed a two-year contract with Mercedes, reported to be worth up to £40 million per year, making him the best-paid Formula One driver in history.