Cilic defeated Blake 6-3, 6-3, 4-6, 6-2 Sunday to help Croatia reach its first Davis Cup semifinals since winning the competition in 2005.
Croatia will take on the Czech Republic at home in September. The Czechs beat Argentina 3-2 on Sunday.
Croatia took a 2-0 lead after Ivo Karlovic rallied to beat Blake and Cilic outlasted Mardy Fish in five sets in Friday's opening singles. Bob and Mike Bryan beat Croatian duo Roko Karanusic and Lovro Zovko in Saturday's doubles.
Also on NBCSports.comBaseball: Complete midseason report
Winderman: Rich get richer in free agency
NBA: Tracking who’s signed, and who hasn’t
PFT: Will UFC ever be bigger than NFL? Please
NFL: Prospects vary for 10 available veterans
Hyndman contemplating changes after Houston loss
Croatia lists Karlovic, Cilic in Davis Cup vs. US
Yallop tries to right ship after loss
