Cologne will have the chance to escape relegation in the final Bundesliga matchday next weekend after scoring a goal in stoppage-time to secure a 3-2 comeback win against Union Berlin on Saturday. The traditional German club needed a win to avoid relegation this weekend, but the mission became even more difficult after Robin Knoche and Kevin Volland from the spot gave Union a 2-0 lead with less than 20 minutes played. Cologne pulled one back shortly before the break, but the atmosphere at their Rhein Energie stadium was dim as relegation to the second division seemed just a matter of minutes. …