A Red Christmas: reasons to be blue?

We know who will be top of the Premier League on Christmas Day, but is it all good news for Liverpool?

Saturday brought a rare home defeat for Manchester City, but what does the data tell us about Crystal Palace's "bonanza day"?

And as for Burnley boss Sean Dyche, the weekend saw one unwelcome run continue into a remarkable 61st match.

BBC Sport takes a look at the key stats from the Premier League's latest round of games.

A Red Christmas: reasons to be blue?

Liverpool's 2-0 victory at Wolves on Friday, and Manchester City's surprise 3-2 home defeat by Crystal Palace, leaves Jurgen Klopp's side with a four-point lead at the top before the next round of fixtures on Wednesday, 26 December.

In eight of the past 10 seasons, the leaders on 25 December have gone on to win the Premier League title.

One team provides the two exceptions. Can you guess who? 

In the 2008-09 season, Liverpool were one point clear of Chelsea on 25 December, with Manchester United in third, six points behind. They ended up finishing second, losing out to United by four points.

In 2013-14, the Reds were ahead of Arsenal on goal difference but ended up losing out to Manchester City by two points, as a home defeat by Chelsea and a draw at Crystal Palace cost them in the final three games of the season.

The data behind Palace's 'bonanza day'

Roy Hodgson called it "one of those bonanza days". His Crystal Palace side caused a big upset at Etihad Stadium, beating defending champions Manchester City 3-2 on Saturday.

But where does it rank among recent shock results?

Simon Gleave, head of sports analysis at Gracenote, suggests it is the biggest upset since Manchester United lost at home to Blackburn Rovers on New Year's Eve in 2011.

He says: "Odds of a Blackburn win at Old Trafford that day were 25-1 at kick-off. A Palace win at City on Saturday was a 20-1 shot when it started according to some bookmakers.

"There have been 10 Premier League matches since the summer of 2003 in which there has been a winner with odds of 14-1 or more. All were away wins at either Arsenal (four times), Chelsea (twice), Manchester City (twice) or Manchester United (twice).

"West Bromwich Albion are the only team to cause a shock of this magnitude twice in the past 15 seasons - winning 3-2 at Arsenal in 2010-2011 and 1-0 at Manchester United last term."