Dave McNally arrived in Baltimore as a 19-year-old in 1962, flashing immediate brilliance with a two-hit shutout in his debut. By the mid-60s, the crafty left-hander had evolved into a cornerstone of the rotation, famously firing a four-hit shutout in the clinching Game 4 of the 1966 World Series to secure the franchise’s first title. It was the start of one of the most dominant pitching runs in the history of the American League.

From 1968 to 1971, McNally authored a standard of excellence that remains the benchmark for Orioles' southpaws. He reeled off four consecutive 20-win seasons, headlined by a league-leading 24 victories in 1970. During this peak, he was a perennial Cy Young finalist, finishing as the AL runner-up in 1970 and placing fourth in both 1969 and 1971. McNally wasn't just a regular-season workhorse; he was a postseason legend. In the 1970 World Series, he not only earned a victory on the mound but also hit the only grand slam by a pitcher in World Series history, a feat that earned his bat a place in Cooperstown.

McNally’s impact on the game extended far beyond his 181–113 record and 1,476 strikeouts in Baltimore. Traded to Montreal after the 1974 season, he courageously challenged the "reserve clause" alongside Andy Messersmith. Their legal victory effectively ended the era of "baseball bondage" and ushered in the modern era of free agency, forever changing the landscape of professional sports.

In 1978, the Orioles honored his towering legacy by making him the lone inductee in the franchise's second Hall of Fame class. A two-time champion and a fearless pioneer, McNally remains the definitive "Big Game" pitcher in the history of the Birds.