Marco Jansen

The provided news articles focus on the South African cricket team's performance in the T20 World Cup, specifically their matches against New Zealand and India. While the articles detail team wins and losses, and highlight the performances of players like Aiden Markram, Marco Jansen's name does not appear in any of the snippets. Therefore, based solely on the information given, it's impossible to determine Marco Jansen's role, performance, or relevance in these specific matches or the overall tournament. The articles primarily discuss South Africa's journey through the group stage and Super Eight stage, and New Zealand's advancement to the final.