Possible Clues:

• Had a setback producing circuits in a rush
• Fell back, parts of track being covered in wet grass
• Weakened king slipped away
• Failed to maintain improvement, but pass, in a way
• Returned to a poorer state of health
• Slip into debt, having become ill again
• Once more it was bad to rush around the circuits of the course like this
• Became ill again
• Covered in grass, circuits got worse
• Lengths in grass has gotten worse