The United States kept their slim hopes of qualifying for the Super Eights of the T20 World Cup alive with a 31-run against Namibia in Group A.
Replying to the USA's 199-4, Namibia finished their 20 overs on 168-6.
For the USA, Sanjay Krishnamurthi hit 68 not out and captain Monank Patel 52. Namibia's top-scorer was Louren Steenkamp with 58.
It leaves the USA on four points after their four group A matches, level with India and Pakistan who clash later Sunday.
Now the USA must wait for the outcomes of the final group games and hope the result goes their way.
Pakistan play Namibia in Colombo and India play the Netherlands in Ahmedabad, with both matches on Wednesday.
UNITED STATES: Monank Patel (capt), Shayan Jahangir (wkt), Saiteja Mukkamalla, Sanjay Krishnamurthi, Shubham Ranjane, Milind Kumar, Harmeet Singh, Mohammad Mohsin, Shadley van Schalkwyk, Saurabh Netravalkar, Ali Khan.
NAMIBIA: Louren Steenkamp, Jan Frylinck, Jan Nicol Loftie-Eaton, Gerhard Erasmus (capt), JJ Smit, Zane Green (wkt), Dylan Leicher, Willem Myburgh, Ruben Trumpelmann, Bernard Scholtz, Max Heingo.