Researching Stu Miller

In 1962, Miller had his highest ERA since 1956, posting a 4.12 mark in 59 games (107 innings pitched), going 5–8 with 19 saves. Thinking he was washed up, the Giants traded him to the Baltimore Orioles with Mike McCormick and John Orsino for Jimmie Coker, Jack Fisher, and Billy Hoeft after the season. He responded with a strong 1963 season in which the Associated Press reported, "Little Stuart has never been better." His record on the year was only 5–8, identical to his numbers from a season ago, but Miller led the American League in games (71), games finished (59), and saves (27) now serving as the Oriole closer; his ERA was 2.24, lowest since his rookie season. He and Leon Wagner were tied for 19th in AL MVP voting after the season. Miller finished seventh in MVP voting in 1965, a year in which he had a 14–7 record, a 1.89 ERA, and 24 saves. His 1.89 ERA remains the lowest in franchise history since the team moved from St. Louis after the 1953 season.

On April 30, 1967, Steve Barber and Miller combined to pitch a no-hitter for the Orioles against the Detroit Tigers, but would lose 2–1. Miller entered after Barber, who walked ten batters, gave up the tying run on a wild pitch with two outs. A ground ball to shortstop should have ended it for Miller, but Mark Belanger misplayed it, his error allowing the winning run to score.

Miller was involved in one of the more memorable moments in All Star Game history, albeit for an exaggeration of the event in question. In the ninth inning of the first of two All Star Games (two were played between and ), which was played at Candlestick Park, a gust of wind caused Miller to sway slightly, resulting in a balk, which advanced Roger Maris to second and Al Kaline to third. In the embellished version, it is reported that the wind gust blew the 165-pound Miller off the pitcher's mound. Kaline later scored on an error by Ken Boyer on Rocky Colavito's ground ball, which tied the score at 3–3. One batter later, the wind caused catcher Smoky Burgess to drop Tony Kubek's foul pop-up for an error. Miller bailed Burgess out by striking out Kubek, and after Yogi Berra reached base on Don Zimmer's error, Miller got Hoyt Wilhelm to fly out to left to end the inning. In the top of the 10th inning, the defense behind Miller almost did him in; Nellie Fox walked and scored all the way from first on Boyer's three-base throwing error (the second by Boyer in as many innings) on Kaline's ground ball. Miller's teammates bailed him out in the bottom of the inning and made him the winning pitcher; Hank Aaron singled and scored on a double by Miller's Giant teammate Willie Mays to tie the score, then Mays scored the winning run on Roberto Clemente's single.

On May 14, 1967, he gave up Mickey Mantle's 500th career home run.

Jim Palmer credited Miller for helping him become a better pitcher. "I learned from guys like Stu Miller. I sat out in the bullpen with him when I was nineteen and watched and listened. It was like graduate school."