Sky Blue advanced to the Challenge Cup semifinals 4-3 on penalties after a scoreless draw with the Washington Spirit on Saturday.  It was the second big upset of the tournament, and one of the biggest wins in Sky Blue history, as the No. 2 seeded Washington Spirit were eliminated largely due to a strong defensive effort. Goalkeeper Kailen Sheridan was the club's hero of the day, making eight saves in regulation and the game-winning stop in the shoot-out when she defended Bayley Feist's penalty kick. Washington wasn't at full strength for the match, though, as Spirit star playmaker Rose Lavelle was on the bench for the first 62 minutes-- she had dealt with an unspecified ankle injury in the days before the game and was on a 30-minute playing limit enforced by the US Soccer Federation. Sky Blue will play the winner of Saturday night’s Chicago Red Stars-OL Reign game in the semifinals on Wednesday