Rugby League started in Huddersfield, so I just presumed people knew the Giants were the rugby team.
As an aside, some of the Town fans are a bit worried about the state of their pitch for their remaining home games.
The number is capped at 17,000. Last season they sold 15001.
http://www.yorkshirepost.co.uk/sport/football/great-deal-for-huddersfield-town-fans-even-if-they-reach-the-top-flight-1-8454544
They also get extra income from the Giants.