Germany and Poland played out a scoreless draw that sees both teams on four points after two games.
Neither side could get a foothold in a pretty drab first half but Arek Milik passed up a gilt-edged opportunity just after the interval.
The Ajax man somehow contrived to put a Kamil Grosicki cross wide of goal when it seemed easier to score.
Germany, who started the match with Mario Götze in a false nine position, failed to really threaten the goal of Lukasz Fabianski for much of the match.
Germany and Poland both have four points, with Northern Ireland a point behind. Ukraine are bottom having taken no points from their two games.