Arsenal joined an elite club of Premier League side's to have scored 100 Premier League goals on Monday night.
Alexandre Lacazette converted from the spot against West Brom to make it 2-0 and seal all three points for his side.
Since the advent of the Premier League in 1992, the English top flight have only three clubs who have scored a century of spot kicks — with the Gunners the latest to join the group.
But it is Liverpool who top the list of the league's greatest top-flight penalty-takers over the last 26 seasons, scoring 122.