(CNN)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.
Weekend in sport: FA Cup throws up surprises; NFL playoffs kick off; Champion Socceroos slump to shock defeat in Asian Cup
The "romance of the cup" is a well-worn FA Cup cliche, but fans of Barnet, Oldham Athletic and Newport County are feeling the love as the three lower-league sides overcame fancied opposition -- Sheffield United, Fulham and Leicester respectively -- to advance to the fourth round of the football's oldest cup competition.
Barnet -- currently languishing in 15th place in the National League, the fifth tier of English football -- provided arguably the shock of the day by beating Championship side United 1-0, courtesy