Here are the correct answers:

In which year was Blackburn’s last win at Stamford Bridge
2003

In which year did Graeme Le Saux leave Chelsea to join Blackburn?
1993

And in which year did Le Saux return to Stamford Bridge?
1997

Le Saux was sold after falling out with which former Chelsea manager?
Ian Porterfield

In how many of their last 14 matches against Chelsea have Rovers failed to score?
10