Defender Ananta Tamang headed the ball home in wee hours as Ruslan Three Star club toiled hard to beat Mai Valley FC 1-0 to enter semifinals of 4th Mechinagar gold cup.
Tamang scored the match winner in 85th minute.
Sushil Rai became the man of the match and received Nrs 11,000 cash.
Nepal Police club will play against Sankata Club in first semifinal match on Wednesday.
Mechi Netralaya Kakarvitta football training centre is organizing the championship, which has a winning purse of Nrs 10 lakh.
3rd Rajarshi Janak Cup Final: Bagmati Municipality Vs Ruslan Three Star Club