Born in Rutherford Heights, Dauphin County, Pennsylvania, Staller threw and batted left-handed and stood 5 ft 11 in (1.80 m) (180 cm) tall and weighed 200 pounds (91 kg). He originally signed with the Brooklyn Dodgers in 1937 and progressed as far as the top-level Montreal Royals in 1940–41, where he led the International League in doubles (40) and triples (12) in 1940. But his only Major League service occurred in 1943, when he was purchased by the Philadelphia Athletics from the minor league version of the Baltimore Orioles after leading the 1943 IL in runs batted in (with 98). Staller appeared in 21 games with the 1943 A's, batting .271 with 23 hits in 85 at bats, including three home runs and 12 RBI. He then joined the armed forces, serving as a United States Marine in the Pacific Theater of Operations^[1] and missing the 1944–45 seasons.

Staller was a minor league manager for 14 seasons, 1948 through 1961. He began in the A's system (1948–53), then moved with Philadelphia general manager Arthur Ehlers to the American League Orioles organization in its first season in Baltimore, 1954. Staller reached the Triple-A level for one season, in 1960 with the Vancouver Mounties; his career managing record was 922 wins, 1,043 losses (.469).

Staller's first term as an Orioles coach came in 1962, when he served one year under skipper Billy Hitchcock. Then, after 5+1⁄2 seasons as a Baltimore scout, he rejoined the Orioles staff when Weaver was promoted from first-base coach to manager in July 1968. Staller served until his retirement from the field at the close of the 1975 season. He was listed as a scout for the Seattle Mariners for the expansion team's inaugural American League season, 1977. George Staller died at age 76 in Harrisburg, Pennsylvania.

• Duxbury, John, ed., The 1969 Baseball Register. St. Louis: The Sporting News, 1969.

• Career statistics and player information from Baseball Reference, or Baseball Reference (Minors)
• George Staller at Find a Grave