Kansas City sent Drabowsky to the Triple-A Portland Beavers of the Pacific Coast League to start the 1963 season; most of his appearances were in relief (19 games, 2 starts) but after going 5–1 with a 2.13 ERA, he got called up to the major league club in June. Back in the majors, he was used as a starter once again. He lost his first six decisions, then went 7–7 the rest of the year to finish 1963 with a 7–13 record. One of the losses from the losing streak was notable; it was the 300th win for Early Wynn, on July 13. Despite the losing numbers, he had a very good 3.05 ERA and topped one hundred strikeouts for the first time since his rookie year, making the 1963 season a resurgence.