Tottenham Hotspur fell to a shock defeat on Sunday afternoon, as they were beaten 1-0 at home by Newcastle United.
Spurs were expected to coast past Steve Bruce's winless Magpies, but served up a dismal display, with Joelinton's first-half goal clinching the win.
Not only were Spurs ineffectual going forward, but there were worrying signs at the back too – and Davinson Sanchez is at the heart of the issues.
The Colombian centre back has endured a difficult start to the campaign. Against Aston Villa on the opening day of the season, he was at fault for Villa's goal, becoming too sidetracked by a physical battle with Wesley to deal with the ball itself.
He was unconvincing against Manchester City, and then completely lost Joelinton for Newcastle's goal on Sunday, again showing his defensive issues.
It's less than a year since Mauricio Pochettino told Goal that he thought Sanchez was 'a beast', with fans understandably excited about his potential having shown that he could be a dominant defender.
However, Sanchez now looks like a shadow of his former self. His positioning gets Spurs into trouble, he's hesitating with bouncing balls, he looks clumsy around the ball now and simply looks like he's stagnating badly in North London, which - having seen how good he can be - is a major problem in a patchy start to the season for Spurs.
The 23-year-old still has talent and potential, but he's not showing it right now. That would be hard enough to deal with anyway, but with Jan Vertonghen sat on the sidelines, Pochettino's decision to stick with Sanchez looks a little strange.
Sanchez – who earns £65,000-a-week according to Spotrac – needs to recapture his best form soon or risk losing his place in the team, and the pressure will mount on both the defender himself and Pochettino if he keeps struggling whilst Vertonghen sits out.
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