Ivanow attended the University of San Francisco where he played collegiate soccer under renowned coach Steve Negoesco.
Six days later, it lost in Chicago when Ivanow and his team mates thought the referee had awarded Bermuda an indirect free kick only to discover their mistake as Gladwys Daniels easily scored.
In 1973, Ivanow earned his first cap with the senior national team when he came on for Mike Winter in a 4–0 loss to Bermuda.
However, Chursky was back in the net for the rest of the post-season, including the Sounders’ loss to the New York Cosmos in the 1977 Soccer Bowl.
In 1978, Ivanow never made a game-day squad, However, in January 1979, the Sounders traded Chursky to the California Surf for Al Trost.
His weight was increasing, decreasing his mobility and he found competition from Paul Hammond who was taking over in goal.