The Senators have invalidated more than 150 Stanley Cup tickets inadvertently sold to suspected ticket brokers. The Senators sold approximately 900 tickets for each home game in the final series. The tickets were sold in less than four minutes Thursday. "This is the right thing to do," Senators CEO Cyril Leeder said Friday. "We have found that scalping is much more prevalent today. "In our case, we saw tickets being purchased at 10 a.m. and then being offered for resale at substantial premiums on various broker Web sites before noon." The Senators are holding the suspect tickets, and have given legitimate buyers the opportunity to validate their purchases within 48 hours.