Seattle forward Clint Dempsey was handed a minimum two-year suspension from the US Open Cup on Thursday and a second fine for his conduct toward a referee in a game last week. The penalty announced by a US Soccer Federation panel was in addition to a three-game league ban and fine announced last week by Major League Soccer. The second penalty, issued by the US Open Cup adjudication and discipline panel, covers up to six US Open Cup matches. If the Sounders lose their initial match each year, the penalty would last through 2021. Dempsey was punished for a confrontation with a ref on June 16 in the Sounders’ fourth-round loss to rival Portland, when he grabbed a notebook from the official and tore it after a teammate was given a red card. The USSF said Dempsey waived his right to appeal.