Complex sentence: After 188 games played with Washington, he was sent to the minor leagues for good after the 1956 campaign, he played his final seven pro seasons in the high minors, mostly in the Senators/Minnesota Twins organization.
Split into simpler sentences: After 188 games played with Washington, he was sent to the minor leagues for good after the 1956 campaign. Oravetz then played his final seven pro seasons in the high minors, mostly in the Senators/Minnesota Twins organization.