This week, Football FanCast's Fixture in Focus is taking a different, more alternative angle.

Usually, it's a simple matter of focusing on the biggest match for any given weekend, but upon running the rule over the FA Cup's Fourth Round schedule, one clash particularly stood out, laden with giant-killing potential - Sutton United vs Leeds United.

Sutton are the lowest ranked team left in the competition and although the Whites are enjoying a fantastic campaign, this match-up carries a hint of typical mid-winter FA Cup magic.

Of course, we're not ruling out a Leeds romping but Sutton are very much an unknown quantity and that should play to their advantage. You'd certainly be forgiven for not knowing too much about the Vanarama National League outfit, who are currently 15th in the fifth-tier table.

With that in mind and ahead of the most unique FA Cup fixture this weekend, here are FIVE things every Leeds fan needs to know about Sutton United...

European Champions

Sutton have never exceeded semi-professional status but that hasn't stopped them making waves on the continent throughout the years.

Indeed, Sutton were one of the most successful sides involved in the incredibly brief semi-professional era of the infamous Anglo-Italian Cup, which was previously better famed for fan violence than excitement on the pitch. They won the European accolade in 1979, unexpectedly beating Chieti 2-1, and finished as runners-up twice more before the competition was disbanded.

Giant killers

Leeds fans be wary; Sutton United have some history when it comes to giant-killing in the FA Cup.

Back in 1989, they famously reached the third round after seeing off Walton & Hersham, Dagenham and Aylesbury, where to everybody's surprise they recorded a 2-1 victory over Coventry City - who were second in the top flight at the time. That stood as the greatest non-league result in the competition for 24 years.

Four years later, in 1993, they beat Colchester City and Torquay United in the FA Cup, whilst they also earned a home tie with Don Revie's Leeds back in 1970, but found themselves on the receiving end of a 6-0 defeat.

Champions League experience

Sutton may be in the fifth tier of English football but they do boast a former player from the top flight - one-time Arsenal youngster Craig Eastmond, who turned out for the Gunners four times in the Premier League and even once in the Champions League.

He's not the only Sutton player of noteworthy pedigree; midfielder Nicky Bailey has previously won Player of the Season awards at Barnet, Southend and Charlton Athletic; defender Kevin Amankwaah has plied his trade with Swansea, Bristol City and Swindon to name a few; Simon Downer made over 75 league appearances during his early days at Leyton Orient; and striker Matt Tubbs scored regularly for Bournemouth, Crawley, Portsmouth and AFC Wimbledon during his spells in League One and League Two.

Without a doubt, Sutton have a bit of quality about them.

A long history

Considering Sutton's progress through the football league has been somewhat modest - they achieved their highest ever rank in the English pyramid of 95th earlier this season - you might be surprised to learn the club has been in existence since the 19th century.

The Amber and Chocolates were officially founded in 1898, almost 119 years ago, and their ground first opened in 1912. Since then, they've gone on to win nine league titles and 32 cups, so Leeds fans be warned - this lowly London club has a surprising history of success.

Garner Green Lane

When non-league sides pay hosts to bigger teams in the FA Cup, the quality of the pitch usually becomes a pivotal factor - a 'leveller' to use the punditry cliche.

But that certainly won't be the case when Leeds come to town; Sutton's Garner Green Lane is home to a 3G pitch which has been deemed 2-star quality by FIFA - the highest rating world football's governing body hand out. Furthermore, Garner Green Lane's attracted some big crowds down the years. Nearly 5,000 attended when AFC Wimbledon played Sutton in their first ever match in 2002, whilst the record remains the 14,000 who watched Leeds claim that 6-0 win back in 1970.

It also uses the idiosyncratic "Ellison's patent rush preventative turnstiles" - perhaps better known for being installed at the old Wembley.