draw BitmapFonts flipped

private SpriteBatch batch;
private OrthographicCamera player1cam, player2cam;

@Override
public void show() {
    batch = new SpriteBatch();
    player1cam = new OrthographicCamera(Gdx.graphics.getWidth(), Gdx.graphics.getHeight());
    player2cam = new OrthographicCamera(-player1cam.viewportWidth, -player1cam.viewportHeight);
}

@Override
public void render(float delta) {
    Gdx.gl.glClearColor(0, 0, 0, 1);
    Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);

    batch.begin();

    batch.setProjectionMatrix(player1cam.combined);
    // draw things normally here

    batch.setProjectionMatrix(player2cam.combined);
    // draw things flipped here

    batch.end();
}