Weekend in sport: FA Cup throws up surprises; NFL playoffs kick off; Champion Socceroos slump to shock defeat in Asian Cup

Lower league sides indulge in some FA Cup giant killing... NFL postseason opens with wildcard weekend... Socceroo shock in the UAE... Warriors and Kings put on three-point show... Swiss duo tighten grip on Hopman Cup ahead of Australian Open. This is your weekend sporting roundup.

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