Sentence:  They documented Waveland Avenue's <WSD>ballhawk</WSD> culture, where Moe Mullins, who's recovered more than 3,500, is king, and followed him home to gape at his bounty: 1,000 major-league balls hoarded like dinosaur eggs. 
Meaning of the word marked with <WSD> tags:  A person who specializes in catching home-run and foul balls.