Yuvraj Singh made his debut in Nairobi during the ICC Knockout under Sourav Ganguly's captaincy. Ganguly recalled instructing a security guard to ensure Yuvraj, then just 17 years old, stayed in his room by 9:30 pm. This precaution was to keep the young player focused for the games, reflecting Ganguly’s dedication to the team's performance.source https://timesofindia.indiatimes.com/sports/cricket/news/he-loves-life-keep-an-eye-on-him-when-sourav-ganguly-asked-a-security-guard-to-watch-over-yuvraj-singh-before-icc-knockout/articleshow/114040674.cms