Because form, by definition, is temporary, and people are hoping (expecting?) it to revert to the mean.Indeed - Premier League form table below, not sure why people are anticipating/expecting West Ham to get next to nothing from their next 3 games considering two of those clubs are even below us in the form table. Brentford have won once in their last 9 PL games, vs Burnley:
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We have definitely been under-performing and West Ham are over-performing. It wouldn’t take much in the form table to adjust and it to swing in our favour.
It may not happen, but it’s v possible it does. That’s what people are clinging to.