The former Chelsea striker scored a now infamous goal at Anfield last season.
Last season saw Liverpool push Manchester City all the way in the Premier League title race. The Reds had an exceptional second half of the season and when they defeated City at Anfield in April it looked as though Liverpool were going to win their first ever Premier League title.
For one man, that was clearly an emotional day.
Steven Gerrard was seen shouting out encouragement to his players after the game as it looked increasingly as if Liverpool were really going to do it - win the Premier League.
Of course he infamously shouted 'we don't let this slip', words which soon came back to haunt him.
Liverpool won their next game 3-2 away to Norwich City and then they did let it slip, in particular their captain. He tumbled when trying to control the ball as the last man and was duly punished by Chelsea striker Demba Ba. That made it 1-0 to Chelsea at Anfield that day, with Ba the hero, as Fernando Torres finished of the scoring late on in a 2-0 Chelsea triumph.
A week later they drew 3-3 with Crystal Palace and the title dream was gone.
Now, the man who tidily capitalised on Gerrard's slip is back at Anfield.
And Ba has been warming up on the pitch, where he will have fond memories of one of his last great moments in a Chelsea shirt.
Liverpool fans and Gerrard will be hoping Ba is not the hero once again this evening.