Ponca City and Greenville (Sooner State League) turn triple plays in successive half innings. Greenville turns theirs in the bottom of the 1st, while Ponca City follows with one in the top half of the 2nd.

On June 28, 1957 Ponca City and Greenville (Sooner State League) turn triple plays in successive half innings. Greenville turns theirs in the bottom of the 1st, while Ponca City follows with one in the top half of the 2nd.

Source
Baseball Reference June 28