Table:
text: Nike Hoop Summit
Stat leaders
USA
Year_ Points Rebounds Assists Steals Blocks
2004 Josh Smith (27) Al Jefferson (7) Sebastian Telfair (7) 3 tied (3) Josh Smith (2)
2005 Tyler Hansbrough (31) Tyler Hansbrough (10) Greg Paulus (10) Monta Ellis (4) Tyler Hansbrough (3)
2006 Wayne Ellington (31) 2 tied (7) 2 tied (6) Wayne Ellington (3) Gerald Henderson (3)
2007 OJ Mayo (20) Michael Beasley (9) Jonny Flynn (10) Derrick Rose (4) 2 tied (2)
2008 DeMar DeRozan (17) Tyreke Evans (8) Jrue Holiday (5) 4 tied (3) Drew Gordon (4)
2009 Xavier Henry (22) John Henson (9) John Wall (11) John Wall (5) 2 tied (2)
2010 Harrison Barnes (27) Jared Sullinger (8) 2 tied (5) 3 tied (2) Terrence Jones (3)

Question: How many rebounds were there by US stats leaders at the Nike Hoop Summit in 2008?