Here’s a paraphrased version of the article, maintaining the core information and structure:
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<p>Oscar Piastri isn't the first leader in the Formula 1 championship to experience a challenging weekend filled with errors. This past weekend in Baku, he collided with the wall during both qualifying and the race and also jumped the start—a trio of mistakes for someone who usually keeps errors to a minimum. Such a scenario is uncommon for a points leader, yet it's not unprecedented, as noted by McLaren's team principal Andrea Stella, who emphasized that even the greatest drivers have their off days. Below is a compilation of championship leaders who encountered disastrous weekends due to their own mistakes:</p>
<h2 id="felipe-massa2008-british-grand-prix">Felipe Massa - 2008 British Grand Prix</h2>
<p>Felipe Massa entered the 2008 British Grand Prix as the championship leader, having finished first and second in the previous race. However, his weekend began poorly in the first practice session when he crashed heavily at Stowe after going off due to oil left on track from a Renault engine failure. Though he set a competitive time, things only worsened from there. In Q3, Massa produced a disappointing lap and was unable to attempt a second one due to a stuck wheel nut, starting the race from ninth place. The rain-soaked race saw him spin on multiple laps and ultimately finish 13th, losing the championship lead to Lewis Hamilton.</p>
<h2 id="michael-schumacher2004-chinese-grand-prix">Michael Schumacher - 2004 Chinese Grand Prix</h2>
<p>Michael Schumacher's performance during F1's inaugural race in China was less than stellar. Leading the world championship, he had already secured the title before this race. However, he spun into the gravel during qualifying, starting the race from 19th due to a subsequent engine change. Despite making progress during the early laps, a collision with Christian Klien's Jaguar on lap 11 and a spin later on led to a disappointing 12th place finish.</p>
<h2 id="sebastian-vettel2018-german-grand-prix">Sebastian Vettel - 2018 German Grand Prix</h2>
<p>In retrospect, Sebastian Vettel's chances for a title were dashed in the gravel at Hockenheim during the 2018 German Grand Prix. With an eight-point lead over Lewis Hamilton and leading the race, he slid off track with just 15 laps remaining. His emotional radio message, expressing frustration, underscored the magnitude of this mistake, which he was never able to recover from during that season.</p>
<h2 id="mark-webber2010-south-korean-grand-prix">Mark Webber - 2010 South Korean Grand Prix</h2>
<p>Mark Webber lost his hold on the 2010 title during the wet South Korean Grand Prix when he crashed while attempting to navigate onto the grass. Heading into this race with a 14-point lead, his costly mistake fundamentally shifted the championship balance in favor of Fernando Alonso, particularly after Webber's teammate, Vettel, retired while leading due to an engine failure.</p>
<h2 id="fernando-alonso2007-canadian-grand-prix">Fernando Alonso - 2007 Canadian Grand Prix</h2>
<p>Having recently triumphed in Monaco, Fernando Alonso arrived in Montreal as the championship leader, yet faced a disastrous weekend. Starting from pole, he struggled to maintain pace and made numerous errors, marking a significant gap in performance compared to his teammate, Lewis Hamilton, who went on to win the race while Alonso finished seventh. This weekend further strained his relations with McLaren.</p>
<h2 id="damon-hill1996-spanish-grand-prix">Damon Hill - 1996 Spanish Grand Prix</h2>
<p>Damon Hill's dominant campaign in 1996 took a turn for the worse during the Spanish GP. After starting from pole, he dropped to third and then faced a series of errors that ultimately resulted in him handing the race over to Michael Schumacher. It underscored a pattern that left fans questioning his performance compared to his earlier season successes.</p>
<h2 id="lewis-hamilton2015-hungarian-grand-prix">Lewis Hamilton - 2015 Hungarian Grand Prix</h2>
<p>While Hamilton’s blunders at the 2007 Chinese Grand Prix could have merited discussion, his performance at the 2015 Hungarian GP stands out as one of his worst races. Dropping from first to fourth at the start and struggling with encounters that resulted in penalties, Hamilton finished sixth in a car that was otherwise the fastest on the circuit. His messy weekend significantly impacted his championship lead.</p>
</div>This paraphrase preserves the essence of the article while rephrasing the content and maintaining the structure.
