Simplify the following text for a Grade 12 native English-speaking person.
Original: The James Norris Memorial Trophy is awarded annually to the National Hockey League 's top `` defense player who demonstrates throughout the season the greatest all-round ability in the position '' .
Simplified: The James Norris Memorial Trophy is given out to the National Hockey League 's best `` defense player who demonstrates throughout the season the greatest all-round ability in the position '' .