Queens Park Rangers centre-back Christopher Samba has apologised for his performance in the club's 3-2 loss at Fulham but says fans have no right to question how much money he earns.
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A club-record signing from Russian club Anzhi Makhachkala in January, Samba was at fault for both of Fulham's opening goals on Monday as QPR slipped to a defeat that left them seven points adrift of safety in the Premier League.
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The 29-year-old Congolese defender conceded a penalty from which Dimitar Berbatov opened the scoring in the eighth minute before giving the ball away and enabling the Bulgarian to score his second goal.
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An own goal from Clint Hill put Fulham 3-0 up and although QPR hit back through Adel Taarabt and Loic Remy, they could not find an equaliser.
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"I'm really sorry I let the side down," Samba wrote on his Twitter account, @cs4christsamba1 late Monday.
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"Really upset with my 1st half performance I can't say sorry enough to all the supporters, won't give up."
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Later, he added: "Before I go tonight I just wanna say I see a lot of you talk about I shouldn't say sorry, well when I'm wrong I'm wrong I hold my hands up.