An old article resurfaces during the Australian Open that might prove useful to poker players squaring off against Boris Becker as Andre Agassi reveals an old ‘tongue tell.’

Ladies, listen up.

The next time you are facing three barrels from Boris Becker, and he starts flicking his tongue at you, it might not be what you think.

In an old story, pumped back to life by Australia’s Herald Sun, we learn how Andre Agassi learned how to beat Becker during their clashes in the early 90s after the American found a ‘tell’ with the German’s tongue.