When the teamsheets arrive for Arsenal's Europa League last-16 clash with Sporting tonight, they will list both sides' starting XI and substitutes.
In the mind of Mikel Arteta's players, however, those left on the bench will have a different name: impacters.
It is another psychological ploy from the Arsenal boss and a move seemingly inspired by the former England rugby coach Eddie Jones, who rebranded his replacements 'finishers'.
'It's something that we wanted to change and I discussed it with a few people. We wanted to find something that is particular for us,' said Arteta, whose side drew 2-2 in last week's first leg in Lisbon.