Question 1: Who did Katie Boulter defeat to reach the semi-finals of the Hong Kong Open?
Answer: Katie Boulter defeated Russia’s Anastasia Zakharova in straight sets.
Question 2: What was the final score of the match between Boulter and Zakharova?
Answer: The final score was 6-4, 6-0 in favor of Katie Boulter.
Question 3: Who will Katie Boulter face in the semi-finals?
Answer: Katie Boulter will face China’s Yuan Yue in the semi-finals.
Question 4: How did Yuan Yue perform in her quarter-final match?
Answer: Yuan Yue overcame Sofia Kenin with a score of 6-3, 6-3.
Question 5: What is Katie Boulter's current ranking as mentioned in the article?
Answer: Katie Boulter is referred to as the British No 1, but her specific ranking is not mentioned in the article.