50,115 articles
Jack Flaherty
Jack Rafe Flaherty (born 1995) is an MLB right-handed pitcher, 2019 Cardinals Cy Young vote-getter, 2024 Dodgers World Series champion, now with Detroit Tigers on a two-year, $35 million deal.
Jack Flett
Jack Flett (John Flett, 1871-1932), Canadian Métis lacrosse defender from Kildonan, Manitoba; won gold with the Winnipeg Shamrocks in the first Olympic lacrosse tournament at St. Louis 1904.
Jack Fraser
Jack Fraser (John Alexander Fraser, 1881-1959) was a Canadian halfback with Galt FC who won gold in men's football at the 1904 St. Louis Olympics, playing one match in Galt's round-robin victories; also Ontario Cup winner 1903.
Jack Grealish
Jack Grealish, English winger born 1995 in Birmingham; Aston Villa captain, then £100m British-record move to Manchester City in 2021; 39 England caps; loans to Everton from 2025.
Jack Gunthard
Jack Günthard (Jakob Günthard, 1920-2016), Swiss artistic gymnast, 1952 Helsinki horizontal bar Olympic champion and team silver medalist; later Italian and Swiss national coach and 'Fit mit Jack' fitness TV pioneer.
Jack Harbaugh
Jack Harbaugh, born in Crestline, Ohio, is a retired college football coach; head coach at Western Michigan (1982-86) and Western Kentucky (1989-2002), winning the 2002 I-AA national title; father of coaches John and Jim Harbaugh.
Jack Harrison (footballer, born 1996)
Jack David Harrison (born 1996, Stoke-on-Trent) is an English winger, 2016 MLS SuperDraft first pick, Leeds United promotion winner, later Everton and Fiorentina loanee, now a New England Revolution Designated Player.
Jack Hatfield
Jack Hatfield (John Gatenby Hatfield, 1893-1965), English swimmer from Middlesbrough; double silver and relay bronze at Stockholm 1912, five world records 1912-1914, four Olympics, Hall of Fame inductee.
Jack Hemingway
Jack Hemingway (John Hadley Nicanor Hemingway, 1923-2000), Ernest Hemingway's eldest son with Hadley Richardson; OSS captain in occupied France, POW, Idaho Fish and Game commissioner, fly-fishing conservationist, and author of Misadventures of a Fly Fisherman.
Jack Hendry (footballer, born 1995)
Jack William Hendry (born 1995, Glasgow) is a Scottish centre-back at Al-Ettifaq and Scotland, formerly of Celtic, KV Oostende, and Belgian champions Club Brugge, a Euro 2020 and 2024 and 2026 World Cup squad defender.
Jack Hermansson
Jack Hermansson, "The Joker", Swedish-born UFC welterweight (formerly middleweight) based in Oslo, 24-10-0, 11 KO and 6 submission wins; notable wins over Jacare Souza and Kelvin Gastelum.
Jack Hickey
Jack Hickey (John Joseph "Darb" Hickey, 1887-1950), Australian dual-code rugby international: 1908 Wallaby tourist, Olympic rugby union gold medalist at London 1908, then Glebe and Balmain rugby league Test player in 1910.
Jack Hobbs
Sir Jack Hobbs (1882-1963), "The Master," was an English opening batsman for Surrey and England (61 Tests) who holds the first-class records of 61,760 runs and 197-199 career centuries from 1905 to 1934.
Jack Hughes
Jack Hughes (Jack Rowden Hughes, born 2001, Orlando, Florida), New Jersey Devils center drafted first overall in 2019; scored the overtime golden goal as the U.S. beat Canada 2-1 for men's hockey gold at Milano Cortina 2026, the first American title since 1980.
Jack Johnson (boxer)
Jack Johnson (John Arthur Johnson, 1878–1946), the Galveston Giant, first African American world heavyweight boxing champion (1908–1915); beat Tommy Burns 1908 and Jeffries in the 1910 Fight of the Century; Mann Act conviction pardoned in 2018.
Jack Johnson (ice hockey)
Jack Johnson (John Joseph Louis Johnson III, born 1987), American NHL defenseman, third overall pick in 2005, 1,228 games over 19 seasons, 2022 Stanley Cup with Colorado, retired 2026 to scout for Vancouver.
Jack Kasley
Jack Kasley (John Hare Kasley, 1916-1989), American breaststroke swimmer, University of Michigan, NCAA champion 1935-37, world record 2:37.2 in 200 m breaststroke (1936), 10th at Berlin 1936 Olympics.
Jack Kayil
Jack Kayil, German guard (born 2006, Berlin), Alba Berlin product and 2025-26 BBL Best Young Player; drafted 39th overall by Houston in 2026 and traded to the New York Knicks after withdrawing from a Gonzaga commitment.
Jack Kelly (American football)
Jack Kelly (born 2003) is an NFL linebacker for the New York Giants, drafted 193rd overall in 2026 out of BYU after starting at Weber State; first-team All-Big 12 in 2025 with 10 sacks.
Jack Kennedy (tennis)
Jack Kennedy (born 2008, Huntington, NY) is an American tennis player, former ITF junior world No. 3, 2025 US Open boys' doubles champion, Savannah Challenger finalist, and ATP career-high No. 379.
Jack Kilpatrick
Jack Kilpatrick (John Kilpatrick, 1917-1989), British-born Canadian ice hockey left wing; won 1936 Winter Olympics gold with Great Britain after one game against Sweden, youngest Briton with a Winter gold.
Jack Kirrane, Jr.
Jack Kirrane, Jr. (John Joseph Kirrane, Jr., 1928-2016), American defenseman and captain of the 1960 Squaw Valley U.S. Olympic hockey gold medal team; also played on the disqualified 1948 U.S. Olympic team.
Jack Kiser
Jack Kiser (born 2000) is an NFL linebacker from Royal Center, Indiana, drafted 107th overall in 2025 by the Jacksonville Jaguars after a record 70-game, six-season Notre Dame career and a special-teams-heavy rookie season.
Jack Kramer
Jack Kramer (John Albert Kramer, 1921-2009), American tennis champion, world No. 1 in 1946, Wimbledon 1947 and U.S. Nationals 1946-47 winner, who turned pro in 1947, promoted the 1950s pro tours, and co-founded the ATP in 1972.
Jack Lambert (American football)
Jack Lambert (John Harold Lambert, born 1952, Mantua, Ohio), Steelers middle linebacker 1974-84, four Super Bowls, 28 interceptions, nine Pro Bowls, Hall of Fame 1990.
Jack Laugher
Jack Laugher (born 1995, Harrogate) is a British springboard diver, City of Leeds club, and Great Britain's first Olympic diving champion, winning 3m synchro gold with Chris Mears at Rio 2016 plus silver, and bronzes at Tokyo 2020 and Paris 2024.
Jack Leach
Jack Leach (Matthew Jack Leach, born 1991, Taunton) is an English left-arm orthodox spinner for Somerset and England; 38 Tests, 142 wickets at 34.07, famous for the Headingley 2019 1 with Ben Stokes.
Jack Leiter
Jack Leiter (born 2000) is a Texas Rangers starting pitcher, second overall pick in 2021 out of Vanderbilt, where he threw a 16-K SEC no-hitter. After minor-league struggles, he reworked his delivery and went 10-10, 3.86 ERA in 2025.
Jack Lengyel
Jack Lengyel, American coach and athletic director; head coach of Marshall's 'Young' Thundering Herd (1971-74, 9-33) after the 1970 plane crash; later AD at Fresno State, Missouri, Navy; portrayed by Matthew McConaughey in We Are Marshall.
Jack Lisowski
Jack Lisowski (born 1991, Cheltenham), nicknamed Jack-Pot, English left-handed snooker professional since 2010; won his first ranking title at the 2025 Northern Ireland Open, beating Judd Trump 9-8 after six lost finals; highest ranking 10.