Jaren is right, it depends on what time period you are referring to. We use the past participle in the passive - (be + past participle) For example, “First, Apples are chopped and placed in a bowl”. (Present passive). “Computers have been used in offices for over twenty years” (Present Perfect Passive) We use the passive when we don’t want to emphasise the person who did the action, or the person is not important. Quentin Tarantino directed Pulp Fiction (ACTIVE) Pulp Fiction was directed by Quentin Tarantino (PASSIVE)

Thank Jaren for help

The difference between these sentences is very subtle. If you were to say “players pretended to be fouled”, it means that they pretended at a specific point in the past, but now they are done pretending. If you say “players pretend to have been fouled”, it means they are still pretending this past occurrence took place.