Lionel Messi’s hat-trick against Celtic was his sixth in the tournament for Barcelona.
The Argentine edged ahead of his great rival Cristiano Ronaldo in the Champions League hat-trick count, racking up yet another remarkable statistic in a career of stunning achievements.
But which club has registered the most hat-trick scorers in the modern Champions League era (1992/93 onwards)?
Find out in the gallery above.
Statistics correct up to and including 13 September 2016