pre_get_posts with a meta_query

<?php

add_filter( 'pre_get_posts', function( $query ) {
    if ( $query->is_post_type_archive( 'player' ) ) {
        $query->set( 'meta_query', array (
            array(
                'key' => 'field_5c254011804c6',
                'compare' => '!=',
                'value' => '1'
            )
        ) );
    }
} );