John Joseph Powell (July 9, 1874 – October 17, 1944) was a Major League Baseball pitcher at the end of the 19th century and the turn of the 20th century. He had a relatively successful 16-year career, which lasted from 1897 to 1912 – he won 245 games, but also lost 254 games. So, despite his sparking 2.97 career ERA, he holds the record for most wins by a pitcher with a career losing record.

Jack Powell
Pitcher
Born: (1874-07-09)July 9, 1874 Bloomington, Illinois, U.S.
Died: October 17, 1944(1944-10-17) (aged 70) Chicago, Illinois, U.S.
Batted: Right Threw: Right
MLB debut
June 23, 1897, for the Cleveland Spiders
Last MLB appearance
September 24, 1912, for the St. Louis Browns
MLB statistics
Win–loss record	245–254
Earned run average	2.97
Strikeouts	1,621
Teams
Cleveland Spiders (1897–1898) St. Louis Perfectos/Cardinals (1899–1901) St. Louis Browns (1902–1903) New York Highlanders (1903–1905) St. Louis Browns (1905–1912)

Powell was born in Bloomington, Illinois.^[1] He made his debut with the Cleveland Spiders in 1897, and by 1898 he became one of the best pitchers on the team. His 23 wins trailed only teammate Cy Young. He was one of the star players sold to the St. Louis Browns before the 1899 season. He won 23 games again that year, which was three more than the Spiders had all year. After three successful seasons, he was lured to the new American League in 1902, where he pitched for the St. Louis Browns.

Powell was traded to the New York Highlanders before the 1904 season, where he went 23–19. However, after an 8–13 start in 1905, he was traded back to the Browns. By this time, the Browns had become one of the worst teams in the league. He had a 2.50 ERA over the last seven years of his career, but posted a 78–106 record. This was due partially to low run support, and partially to poor defense. Of the 619 runs he allowed in these seven years, 189 of them were unearned.^[2]

Powell retired after the 1912 season. He died in Chicago in 1944.