Complex sentence: The right-hander was signed by the Kansas City Athletics before the 1964 season, also spent time in the Washington Senators organization, and was later drafted by the Seattle Pilots from the Senators as the 30th pick in the 1968 expansion draft.
Split into simpler sentences: The right-hander was signed by the Kansas City Athletics before the season. He also spent time in the Washington Senators organization, and was later drafted by the Seattle Pilots from the Senators as the 30th pick in the 1968 expansion draft.