Declan Campbell looks at the curse of Rafael Nadal at the ATP World Tour Finals.
Juan Martin del Potro eyes miraculous recovery.
Karolina Pliskova booked her place in the semi-final of the WTA Finals.
Is it time for tennis to match the standards of every other sport and allow on-court coaching?
Ahead of ATP Finals, we look at the five key points.
In light of Kyle Edmund's maiden trophy, we look at five other British stars' first title wins.