Drabowsky started 1970 with the Royals again. He spent time in the hospital after an averse reaction to medication, presumably during a stretch in May where he had 12 days off. On June 15, he saw on the out-of-town scoreboard that the Orioles' pitchers had struggled late in a game against the Milwaukee Brewers and speculated that the team would be wanting some bullpen help. Sure enough, he was traded back to the Orioles that same day, for Bobby Floyd. "I always knew I'd come back to the Orioles someday," he said. He made 21 appearances for the Orioles the rest of the season, finishing the year with a 5–4 record, a 3.52 ERA, and 59 strikeouts in 69 innings pitched in 45 games between Kansas City and Baltimore. The Orioles won the AL East, and Drabowsky was a part of their playoff roster. He did not make an appearance in the first-round sweep of the Twins but was used twice in the World Series against the Reds. In Game 2, he entered in the fifth and pitched innings, giving up a solo home run to Johnny Bench in the Orioles' 6–5 victory over the Reds. He threw a scoreless ninth inning in Game 4, but the Orioles lost that game 6–5. However, that was the Orioles only loss of the series, and Drabowsky won another World Series ring as the Orioles defeated the Reds in five games.