Lewiston High graduate Isaiah Harris finished fourth in his semifinal heat and did not qualify for the final in the 800 meters at the world track and field championship on Sunday in London.

Harris ran 1:46.66 in the semifinal. Adam Kszczot of Poland won the heat in 1:46.24 and Nijel Amos of Botswana was second in 1:46.29. The top two finishers in all three heats, plus the next two fastest times qualified for the finals, which will take place Tuesday.

Harris earned a spot in the semifinals by finishing second in his first-round heat Saturday with a time of 1:45.82. He reached the world championships by finishing second at the U.S. championships in June.