Ahead of Liverpool's clash with Cardiff on Saturday, the fortunes of either side could not be more different.
A heavy defeat at Anfield could be the perfect excuse for Mackay to be fired and the statistics suggest something of the sort could be on the cards.
1. Title-winning form
Liverpool's start to the season has taken many quarters by surprise.
After 16 league games, they sit second in the table and could go top this weekend.
Even more interestingly, however, the Reds have scored 39 goals in 16 games this season - and the last time they had as many was in the title-winning campaign of 1987-88.
Luis Suarez has been integral to most of those goals and has already scored two hat-tricks at Anfield this term. Could the Uruguayan score a third tomorrow?
2. Goal shy
By contrast, Cardiff have scored just 12 league goals this campaign.
Away from home, meanwhile, they have scored four in eight.
Fraizer Campbell is the Bluebirds' top scorer with just three goals to his name, while centre-back Steven Caulker has scored two.
To add to their woes, Cardiff have won just once away from home. Worrying signs.
3. But... 1 in 5
However, one statistic that works in Cardiff's favour is the fact that Liverpool heave beaten them just once in their last five meetings - in normal time.
That victory came in 2007, when the Reds beat the Bluebirds 2-1 in the League Cup.
Cardiff won the three games between the two sides that came before that, although they were in the 1950s!
Liverpool did beat Cardiff in their last meeting - in the Carling Cup final in 2012 - but needed penalties to do so after being held to a 2-2 draw after extra-time.
InfoGraphic Source : Live Football