Answer:
Player D had the worst score because it took him 6 more shots than expected.
Step-by-step explanation:
ordering the scores on the number line
B C A D
<---|-----|-----|-----|-----|----|----|-----|-----|-----|-----|-----|-----|----->
-5 -4 -3 -2 -1 0 1 2 3 4 5 6 7