He claimed he was playing badly because of an injury, but I think he was 'sandbagging'.
They 'sandbagged' (the area around) the house to protect it from the flood.
He would have won the election but he got 'sandbagged' by the media.
(..) HE SHOUTS DRUM BEAT QUICKENS GONG Oh! THEY LAUGH She splits the sandbag, the sand pours out. Gradually, the weight lowers into the bowl. ESCAPOLOGIST SHOUTS AND STRAINS APPLAUSE (..)2010 TvShow: Sherlock Title: The Blind Banker Season: 1 Episode 2