Gregor Kobel

Based on the provided articles, Gregor Kobel is not mentioned. The articles focus on a Bundesliga match between Borussia Dortmund (BVB) and Hamburger SV (HSV). The articles highlight that BVB won the game, taking a significant step towards Champions League qualification. HSV performed well in the first half, but BVB rallied after halftime to secure the victory. The game involved three penalty kicks. Without any mention of Gregor Kobel in the provided text, it is impossible to determine his role, relevance, or significance in the context of these articles. Therefore, no information about him can be derived from the given sources.