Philadelphia/Kansas City Athletics He signed with the
Philadelphia Athletics as a
free agent in 1948. He played one year of minor league baseball, for the
Class A Lincoln A's in 1948. He was a
starting pitcher, with an 18–7
win–loss record, 2.82
earned run average (ERA), 212
strikeouts in 214
innings pitched, 19
complete games, and two
shutouts. He had a 3.85
strikeout-to-walk ratio. Shantz made his MLB debut on May 1, 1949, with the Athletics, pitching .2 innings in relief. He pitched in 33 games for the 1949 A's, starting seven; with a 6–8 record and 3.40 ERA. The next season he started 23 of the 36 games in which he appeared, with an 8–14 record and 4.61 ERA. Shantz was a control pitcher who relied on keeping hitters off balance with a variety of
curveballs,
fastballs and
changeups. As his pitching career progressed, Shantz learned the value of studying each batter's unique weaknesses in determining how to pitch to them. His record improved to 18–10, with 25 starts and a 3.94 ERA on a team that only won 70 games. In 1952, Shantz led the
American League (AL) in wins (24) and won the
AL Most Valuable Player Award. In the process, he led the A's to a 79–75 record and fourth-place finish in the American League, their last winning season in Philadelphia. His 9.4 WAR (
wins above replacement) led all major league players, and his 8.8 WAR for pitchers led all major league pitchers. His 2.48 ERA was fourth best among all major league pitchers. On August 5, 1952, 35,000 A's fans came to
Shibe Park to watch Shantz win his 20th game, their highest game attendance in four years. It was the earliest an A's pitcher had won 20 games since Hall of Fame pitcher
Lefty Grove in 1931. The financially distressed A's averaged nearly 18,000 attendees per game when Shantz pitched that year, but fewer than 8,000 for their other games. The following season, Shantz injured his shoulder in a game against the
Boston Red Sox. Shantz saw only limited action for the rest of 1953 and pitched only eight innings in 1954. At the end of the 1954 season the Athletics were sold and moved to Kansas City for the 1955 season. In his first season in Kansas City, Shantz started 17 of the 23 games in which he pitched, with a 5–10 record and 5.10 ERA. Shantz's brother Bill played on the Philadelphia A's in 1954 and the Kansas City A's in 1955. In late April 1956, Shantz pulled a back muscle. Based on Shantz's injury history, A's manager
Lou Boudreau concluded it was best to use Shantz as a late inning relief pitcher. Shantz pitched 43 of his 45 games in relief that season, pitching 101.1 innings. He had a 2–7 record, nine saves and a 4.35 ERA.
New York Yankees On February 19, 1957, the Athletics traded Shantz,
Art Ditmar,
Wayne Belardi,
Jack McMahan, and a
player to be named later to the
New York Yankees for
Rip Coleman,
Milt Graff,
Billy Hunter,
Mickey McDermott,
Irv Noren,
Tom Morgan, and a player to be named later. The Yankees sent
Jack Urban to the Athletics and the Athletics sent
Curt Roberts and future Gold Glove third baseman
Clete Boyer to the Yankees to complete the trade. In 1957, the Yankees used Shantz as a starter again in 21 of his 30 appearances. Shantz led the league and all major league pitchers in ERA in his first year with the Yankees (2.45), and had an 11–5 record with five saves. After the 1957 season, however, he was never a regular starting pitcher for the remainder of his career. He pitched almost entirely in relief the next season with a 7–3 record and 2.38 ERA for the
1959 Yankees; and entirely in relief with a 5–4 record and 11 saves with a 2.79 ERA for the
1960 Yankees. Shantz appeared in relief three games each in the 1957 and 1960
World Series with the
Casey Stengel managed
New York Yankees.
Later years (1961–64) Shantz was selected in the December
1960 MLB expansion draft by the
Washington Senators. Two days later, the Senators traded Shantz to the
Pittsburgh Pirates for
Bennie Daniels,
Harry Bright, and
R. C. Stevens. On May 7, 1962, the Colt .45s traded Shantz to the
St. Louis Cardinals for
John Anderson and
Carl Warwick. In 1962, he had a career-low ERA of 1.95 in 78.1 innings pitched (1.31 with Houston, and 2.18 with the Cardinals). On June 15, 1964, the Cardinals traded Shantz, recent NL wins leader
Ernie Broglio, and
Doug Clemens to the
Chicago Cubs for then undistinguished but future
Baseball Hall of Fame outfielder
Lou Brock,
Jack Spring, and
Paul Toth. The centerpiece of the trade was
Brock for Broglio, and it is considered one of the most lopsided trades in MLB history (in the Cardinals favor). The Cubs sold Shantz's contract rights to the
Philadelphia Phillies in August 1964. He retired after the 1964 season. and played an important role in the team's pursuit of the National League pennant. Among other things, in a September 17 game against the
Los Angeles Dodgers, he came into the game with one out in the first inning, and pitched 7.2 innings of 3-hit baseball to defeat future Hall of Fame pitcher
Don Drysdale. However, he also played a part in that team's notorious collapse at the end of the season. On September 20, the Phillies were in first place with a 6-game lead in the National League with just 12 games remaining in the season. The Phillies then lost 10 consecutive games and the pennant. On September 26 (Shantz's 39th birthday), manager
Gene Mauch brought Shantz in to relieve in the eighth inning with the Phillies holding a 4–3 lead in a game against the
Milwaukee Braves. Mauch sent the left-handed Shantz back out in the ninth inning, and he loaded the bases after two singles and an error. Braves' rookie
Rico Carty then hit a
bases-loaded triple off of Shantz, making him the losing pitcher in what was the last appearance of Shantz's career. One of the questions raised about the Phillies collapse was why Mauch used the left-handed Shantz against the right-handed Carty (who had a .330
batting average that season). In his 16-year major league career, he was 119–99, with a 3.38 ERA and 34.6 WAR. Shantz recorded a .195
batting average (107-for-548) with 60
runs, 20
doubles, one
home run, 46
runs batted in and 47
walks. Defensively, he posted a .976
fielding percentage which was 19 points higher than the league average at his position. == Legacy and honors ==