1956

Adversity turned into good fortune, however, when the Braves started slowly under skipper Charlie Grimm. They were 24–22 on June 17, 1956, when Grimm was fired and Haney was named the manager. Under him, Milwaukee played at a .630 clip (68–40) for the rest of the season. As late as the final series of the season, the Braves were in position to win the National League pennant. On the morning of Friday, September 28, they held a one-game lead over the Brooklyn Dodgers with three games to play. However, the Braves lost two of three against St. Louis during the season's final weekend, while Brooklyn swept the lowly Pirates three straight to escape with the NL flag by a single game.^[1] Nevertheless, the Braves' 1956 performance secured Haney's tenure in the Beer City. He would push his team hard on fundamentals the following spring training, stating that "You're going to hate my guts next spring, but you'll love me when you see that World Series check in the fall."^[2]

During his tenure of a little more than 3+1⁄2 seasons, Haney would lead the Braves to their only two pennants and lone World Series championship in 13 years of existence (1953–65) in the city. Yet for all his managerial success in Milwaukee, Haney had more than his share of critics who believed it was largely the result of the immense talent around him.

1957

In 1957, with a lineup that included future Baseball Hall of Fame members Hank Aaron, Eddie Mathews, Warren Spahn, and Red Schoendienst – and stars such as Lew Burdette, Bob Buhl, Johnny Logan and Del Crandall – the Braves won the National League pennant by eight games over the St. Louis Cardinals. During the regular season, Haney led the Braves in overcoming season-ending injuries to star first baseman Joe Adcock and fleet center fielder Bill Bruton, and slow starts to the season by two regulars, left fielder Bobby Thomson and second baseman Danny O'Connell, both of whom were traded to the New York Giants on June 15 for Schoendienst.

Then, led by Burdette's three complete-game victories in the World Series, the Braves defeated the New York Yankees in seven games – including winning the crucial seventh game 5–0 at Yankee Stadium with Burdette pitching – thus making him the World Series Most Valuable Player. Aaron received the National League Most Valuable Player award and Spahn won the lone Major League Cy Young Award (two Cy Young Awards were not given out per year until 1967).

1958

In 1958, Milwaukee repeated as champions in a league that was in transition, prevailing again by a margin of eight games. The core of the team was once again Aaron, Matthews, Adcock, Spahn and Burdette. However, Buhl was limited to eleven appearances because of health issues, while Adcock played in only 105 games and Wes Covington in just 90 also because of injuries. Nonetheless, in Spahn and Burdette, the team had the best starter tandem in the majors. Spahn recorded a 22–11 record in 290 innings, while Burdette posted a 20–10 mark in 275 innings. The Braves finished first in the National League with a 92–62 record and returned to the World Series.

The Yankees again won the American League, hence the two teams faced off against each other again in the World Series. The Braves roared ahead by winning three of the first four games in the series. The Yankees quickly regrouped, and they won Games 5, 6, and 7 and the championship. The final two games were played at Milwaukee County Stadium.

Many consider the turning point was Haney's controversial decision to start Burdette and Spahn on two days' rest each in the final two games, which had the appearance of a panic move, what with his team ahead 3–2 lead in the series. Some critics believe well-rested veteran Bob Rush would have been a wiser choice in Game 6, pointing to his effectiveness in the final two months of the regular season as well as in Game 3 of the series albeit it in a loss. That would have allowed Spahn, who had been victorious in his previous two starts, to open Game 7 if necessary on his accustomed three days' rest. At the same time, Burdette, who had struggled in his two starts, would have been available in the bullpen. Instead, Spahn pitched well in a 4–3, 10-inning loss in Game 6, then Burdette tired late in a 6-2 setback in the clincher.

1959

In 1959, the Braves were back in the thick of contention again, with the same core of regular players, and a stronger pitching staff, since Buhl came back to pitch 200 innings in 31 games, with a 15–9 record. Spahn and Burdette were brilliant, each with a 21–15 record in 290 innings pitched and a combined 41 complete games. Aaron and Matthews had prolific seasons. Aaron led the league with careers highs in 223 hits, a .355 batting average and 400 total bases. He had 39 home runs and 123 runs batted in, while leading the league in slugging percentage. Matthews paced the team with 46 home runs and batted in 114 runs.

The Braves finished in a tie with the Los Angeles Dodgers for first place, both with records of 86 wins and 68 losses. This forced the two teams into a best-of-three-games playoff. Once again, Haney bypassed Rush and others in favor of inexperienced starter Carlton Willey in Game 1, a 3–2 loss in Milwaukee. The Dodgers completed the two-game sweep the next day, 6–5, to capture the pennant in Haney's hometown of Los Angeles. A short time later, Haney, approaching the age of 61, was dismissed as Braves manager, and he was replaced by the former Dodger coach Chuck Dressen.

In his guide to baseball managers, author Bill James makes a detailed case for considering Haney's 1959 season at the helm of the Braves as the worst performance by an MLB manager. As he puts it: "Without exaggeration, the 1959 Dodgers shouldn't have been within 20 games of the Braves In reality, the two teams ended up playing a three-game playoff, which the Dodgers swept in two games. Among Haney's mistakes that season: riding his two top pitchers, Warren Spahn and Lew Burdette into the ground while ignoring a number of talented youngsters who were available to pitch; platooning Joe Adcock with the awful Frank Torre long after Torre had demonstrated he was in a year-long slump; failing to settle on a solution when second baseman Red Schoendienst was lost for the season; and loading his bench with a group of grumpy and over-the-hill veterans from which he failed to get any production."

With his other two "near misses", Haney stands as by far the most successful manager of the Braves' years in Milwaukee. His career managing record — tarnished by poor teams in St. Louis and Pittsburgh — was 629–757 (.454). He won 341 games and lost 231 (.596) with the Braves.