Back and forth, back and forth, until one team trips up. That is the usual pattern in a league title race, with twists and turns aplenty.
But with Manchester City and Liverpool - separated by just a point heading into Sunday's clash - the status quo is ripped up. Nothing illustrated that more than 2019's title race, described as 'flawless' by Gary Neville on Sky.
From March 3 onwards, with both teams having nine games remaining, 18 wins were produced right up until the final ball is kicked. City emerged triumphant - and it illustrates why this weekend showdown is already being billed as a title decider even though both teams will have seven games left after this.