Table:
text: List of United States national ice hockey team rosters
Men's U20
2009 World Juniors
Position_ Jersey_number Name_v_t_e Height_cm Weight_kg Birthplace _2008_09_team NHL_rights_if_any
D 20 Blake Kessel Category:Articles with hCards 188 92 Madison, Wisconsin University of New Hampshire New York Islanders
D 17 Ryan McDonagh Category:Articles with hCards 185 94 Arden Hills, Minnesota University of Wisconsin-Madison New York Rangers
D 5 Teddy Ruth Category:Articles with hCards 183 93 Naperville, Illinois University of Notre Dame Columbus Blue Jackets
D 8 Kevin Shattenkirk Category:Articles with hCards 180 87 New Rochelle, New York Boston University Colorado Avalanche
F 27 Drayson Bowman Category:Articles with hCards 185 88 Littleton, Colorado Spokane Chiefs Carolina Hurricanes
F 12 Jimmy Hayes Category:Articles with hCards 191 93 Dorchester, Massachusetts Boston College Toronto Maple Leafs

text: List of United States national ice hockey team rosters
Men's U20
2009 World Juniors
Position_ Jersey_number Name_v_t_e Height_cm Weight_kg Birthplace _2008_09_team NHL_rights_if_any
F 11 Mike Hoeffel Category:Articles with hCards 191 88 North Oaks, Minnesota University of Minnesota New Jersey Devils
F 10 Tyler Johnson Category:Articles with hCards 175 79 Spokane, Washington Spokane Chiefs None
F 18 Danny Kristo Category:Articles with hCards 180 82 Eden Prairie, Minnesota Omaha Lancers Montreal Canadiens
F 15 Jim O`Brien Category:Articles with hCards 188 86 Maplewood, Minnesota Seattle Thunderbirds Ottawa Senators
F 7 Aaron Palushaj Category:Articles with hCards 183 84 Northville, Michigan University of Michigan St. Louis Blues
F 9 Matt Rust Category:Articles with hCards 178 88 Bloomfield Hills, Michigan University of Michigan Florida Panthers
F 19 Jordan Schroeder Category:Articles with hCards 175 83 Prior Lake, Minnesota University of Minnesota None

text: List of United States national ice hockey team rosters
Men's U20
2009 World Juniors
Position_ Jersey_number Name_v_t_e Height_cm Weight_kg Birthplace _2008_09_team NHL_rights_if_any
G 30 Thomas McCollum Category:Articles with hCards 188 93 Sanborn, New York Guelph Storm Detroit Red Wings
G 1 Josh Unice Category:Articles with hCards 183 79 Holland, Ohio Kitchener Rangers Chicago Blackhawks
D 24 Jonathon Blum Category:Articles with hCards 185 84 Rancho Santa Margarita, California Vancouver Giants Nashville Predators
D 28 Ian Cole Category:Articles with hCards 185 99 Ann Arbor, Michigan University of Notre Dame St. Louis Blues
D 4 Cade Fairchild Category:Articles with hCards 178 84 Duluth, Minnesota University of Minnesota St. Louis Blues

Question: What is the average weight of players 180 cm tall in the 2009 World Junior USA national ice hockey team list playing in the D position?