Chelsea vs Barcelona - All you need to know

The moment ya all football lovers have been waiting for is finally here and it's the UEFA Champions League round 16 tie between Chelsea vs Barcelona at Stamford Bridge tonight. Who carries the day?

After a six-year wait, one of European football's most enthralling recent rivalries will be played out as Chelsea trade tackle with Barcelona for the first leg of the UEFA Champions League round of 16.

For Barca, which has already made it into the final of the Copa del Rey and holds a comfortable lead in the La Liga standings, Tuesday’s game gives it the chance to strut its stuff on the Old Continent’s biggest stage.

The return leg will be played on March 14 at Camp Nou.

-The two sides have played 12 Champions League matches before — all since the year 2000 — with 10 of them coming in the knockout stages and two coming in the group stage.

-This is the third time Barca and Chelsea have met in the round of 16 and the Catalans are looking to extend its record and qualify for the quarterfinals for the 11th straight time.

-This tie is one of two in this season's round of 16 to bring together two former European champions: FC Porto's meeting with Liverpool is the other. 

Previous meetings
-The teams have faced each other 12 times in UEFA competition with four Chelsea wins to three for Barça and five draws.
-Chelsea came out on top when the teams last crossed paths, in the 2011/12 semi-finals. Didier Drogba scored the only goal of the first leg in west London. 

Form guide
-The Blues have the record of W9 D5 L2 at home to Spanish visitors. The sole defeats were that Atletico reverse in 2014 and the 2-1 loss against Barcelona in the 2005/06 round of 16 first leg (2-3 aggregate).

-The London club's record in the round of 16 is W8 L4. They lost at this stage to Paris Saint-Germain in both 2014/15 and 2015/16.

-Chelsea have played ten two-legged knockout ties against Spanish clubs (W4 L6), most recently in the 2013/14 UEFA Champions League semi-finals when they lost 3-1 in the home second leg, and overall, to Club Atlético de Madrid.

-Chelsea have already faced Spanish opposition in this season's competition, taking four points from their two Group C games against Atlético.

-Barcelona have lost three of their last seven away games in the UEFA Champions League, including the 4-0 defeat at Paris in last season's round of 16 first leg and the ultimately crucial 3-0 quarter-final first-leg loss at Juventus, bowing out by the same aggregate score.

-They have won five of their last 14 away matches in the competition, drawing four and losing five.

-The Spanish side have won 13 of their 23 two-legged ties with English clubs. That 2012 defeat by Chelsea is the only reverse in their last seven contests. 

Who’s In & Who’s Out 
Chelsea
In: Ross Barkley, Olivier Giroud, Emerson Palmieri 

Out: Jake Clarke-Salter, Michy Batshuayi, Kenedy, Charly MusondaJanuary signing Ross Barkley.

Barcelona 
In: José Arnaiz, David Costas, Yerry Mina 
Out: Gerard Deulofeu, Javier Mascherano, Rafinha, Arda Turan. Returning to the Barcelona squad is Vermaelen, Philippe Coutinho, however, cannot play after having already appeared in the Champions League this season while playing for Liverpool.

Send in your prediction.... Who wins???