Saturday 19 November 2016 12:16, UK
Rory McIlroy has overcome plenty of tough challenges in his career, but have there been any more difficult than being Billy's guest on the European Tour's "Little Interviews"?
McIlroy stars in a no-holds-barred interview with the youngster ahead of the DP World Tour Championship in Dubai, although he may have regretted agreeing to there being no restrictions on the line of questioning.
The world No 2 is grilled on several sensitive issues, including his decision to withdraw from the Olympic Games in Rio as well as the "real reason" why he almost missed his tee time for his crucial singles match against Keegan Bradley in the memorable Ryder Cup of 2012.
Little Billy has no qualms about delving deep into McIlroy's life away from the course, but could he get the four-time major champion to name his favourite female tennis player? And why is Billy handing over his wedding gift to McIlroy now?
Click on the video above to hear McIlroy endure - and enjoy - the toughest interview of his life! There's also much more entertaining content on the European Tour's YouTube homepage.
