Calendar widget: specific categories on specific pages

// We'll assign the slug of a specific event category to this var
$calendarTerm = null;

// Have any of the pages we are interested in been requested?
switch ($wp_query->post->post_name) {
    case 'peewee-schedule': $calendarTerm = 'peewee'; break;
    case 'bantam-schedule': $calendarTerm = 'bantam'; break;
    case 'midget-schedule': $calendarTerm = 'midget'; break;
}

// Basic query
$calendarQuery = array('eventDisplay' => 'month');

// Create and use a tax query if we have a calendar term
if ($calendarTerm !== null) {
    $taxonomyQuery = array('tax_query' => array(array(
        'taxonomy' => TribeEvents::TAXONOMY,
        'field' => 'slug',
        'terms' => $calendarTerm
    )));

    $calendarQuery = array_merge($taxonomyQuery, $calendarQuery);
}

$eventPosts = tribe_get_events($calendarQuery);