Clockword

The solutions from 1 to 12 are all six-letter words ending with the letter R in the centre. Moving clockwise from 1, the letters in the outer circle will spell out the name of an American golfer.

1. Labourer 7. Small celestial body

2. Edible mollusc 8. Chemical compound

3. Excavator 9. Work

4. Trader 10. Walk unsteadily

5. Torment 11. Relating to the eye

6. Reply 12. Digit