Table:
text: History of NTL Championships
Results by Year
Results by Year
Year_ Mens_Open Womens_Open Mixed_Open Mens_u20 Womens_u20 Senior_Mixed Mens_30 Womens_30 Mens_35 Womens_35 Mens_40 Womens_40 Mens_45 Mens_50
2006 Gold Coast Sharks def Sydney Mets Gold Coast Sharks def Sydney Mets Sydney Mets def Sydney Scorpions Northern Eagles def South Queensland Sharks Southern Suns def Brisbane City Cobras N/A Sydney Mets def Sydney Scorpions Southern Suns def Sydney Scorpions Gold Coast Sharks def Sydney Scorpions Gold Coast Sharks def Qld Country Rustlers Sydney Scorpions def Sharks Gold Coast Sydney Scorpions def Southern Suns Brisbane City Cobras def Sydney Mets Qld Country Rustlers def Hunter Western Hornets
2007 Gold Coast Sharks def Sydney Mets Brisbane City Cobras def Sydney Mets Gold Coast Sharks def Hunter Western Hornets Qld Country Rustlers def Southern Suns Southern Suns def Brisbane City Cobras N/A Southern Suns def Defence Force Warriors Hunter Western Hornets def Qld Country Rustlers Gold Coast Sharks def Sydney Scorpions N/A Sydney Scorpions def Southern Suns Gold Coast Sharks def TQ Cyclones Northern Eagles def Southern Suns Brisbane City Cobras def Northern Eagles
2008 Sydney Mets def Gold Coast Sharks Sydney Mets def Barbarians Brisbane City Cobras def Southern Suns Brisbane City Cobras def Sydney Mets Southern Suns def Brisbane City Cobras Gold Coast Sharks def Gold Coast Sharks Sydney Mets def Sydney Scorpions Victoria def Hunter Western Hornets (*W27s) N/A South West Qld def Hunter Western Hornets Sydney Scorpions def Hunter Western Hornets Sydney Scorpions defeated Hunter Hornets Southern Suns def Northern Eagles Brisbane City Cobras def Sydney Mets

Question: What was the Men's Open when the Men's Under-20s Qld Country Rustlers vs. Southern Suns in NTL Championships history?