Vladimir Smicer's first goal for Liverpool secured a 3-2 victory over Watford at Vicarage Road in January 2000, but can you recall the starting XI from that afternoon?
Patrik Berger and David Thompson put Gerard Houllier's Reds two goals ahead in the Premier League clash, but Richard Johnson and Heidar Helguson pulled the Hornets level with strikes either side of half-time.
Enter Smicer, who came off the bench just after the hour and, less than 10 minutes later, finished into the bottom corner from the edge of the area to clinch the win.
But who did the Czech Republic international replace? Can you fill in all the Missing Men below?
Fill in the answers in the quiz below, or click Next at the bottom of the page to reveal the Missing Men…