 Complete the following phrase:  Čech started the opening game of Chelseas 201112 Premier League season away to Stoke City, which ended 00. On 18 August 2011, Čech was ruled out for up to four weeks after he sustained a knee injury in training. He made his return three weeks later against Sunderland in which Chelsea won 21. He kept a clean sheet in Chelseas first Champions League match of the season in a 20 win over Bayer Leverkusen. On 27 February, Čech was announced as the Czech Footballer of the Year for 2011, winning the award for the fifth time. On 24 March, Čech played his 250th league game for Chelsea against Tottenham Hotspur in a 00 draw at Stamford Bridge. Čech saved a penalty in extra time against former teammate Arjen Robben, and two penalties in the subsequent penalty shoot-out, of the 