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Howie Kendrick
Howie Kendrick (Howie Joseph Kendrick), MLB second baseman 2006-2020 for the Angels, Dodgers, Phillies, and Nationals; 2019 NLCS MVP whose Game 7 World Series go-ahead homer off the foul pole won Washington its first title.
Hub City Spartanburgers
Hub City Spartanburgers, minor league baseball team, formerly Down East Wood Ducks; High-A South Atlantic League Texas Rangers affiliate in Spartanburg, SC since 2025, playing at Fifth Third Park.
Hubert H. Humphrey Metrodome
Hubert H. Humphrey Metrodome, the Metrodome or ThunderDome, was Minneapolis's $55 million air-supported domed stadium (1982–2014) hosting the Twins, Vikings, and Gophers, two World Series, Super Bowl XXVI, and two Final Fours.
Hudson Valley Renegades
Hudson Valley Renegades, High-A South Atlantic League team in Wappingers Falls, New York; New York Yankees affiliate since 2021, formerly Rays and Rangers; plays at Heritage Financial Park.
Hunter Feduccia
Hunter Feduccia (born 1997, Lake Charles, LA) is an MLB catcher for the Los Angeles Dodgers, drafted 12th round 2018 from LSU, traded to the Rays in 2025 and reacquired in August 2026.
Hunter Pence
Hunter Pence (born 1983, Fort Worth, Texas) is a former MLB outfielder for the Astros, Phillies, Giants, and Rangers; two-time World Series champion (2012, 2014), four-time All-Star, 244 career home runs, known for his unorthodox swing.
Hunter Renfroe
Hunter Renfroe (Dustin Hunter Renfroe) is an American MLB right fielder born 1992 in Crystal Springs, Mississippi; 13th overall pick 2013, 192 career home runs, played for seven teams including the Padres, Red Sox, and Royals.
Hyun-jin Ryu (류현진)
Hyun-jin Ryu (류현진), nicknamed Monster, South Korean left-handed pitcher born 1987 in Incheon; Hanwha Eagles KBO star, Dodgers and Blue Jays 2013-2023, 2019 MLB ERA leader, 2008 Olympic gold, KBO return 2024.
Ian Happ
Ian Happ (born 1994, Pittsburgh) is a switch-hitting Cubs left fielder, 2015 first-round pick from Cincinnati, 2022 NL All-Star, three-time Gold Glove winner (2022-24), 197 career home runs, free agent after 2026.
Ian Kinsler
Ian Kinsler (born 1982, Tucson) is a former MLB second baseman (2006–2019) with the Rangers, Tigers, Angels, Red Sox, and Padres; four-time All-Star, two-time Gold Glove winner, 1,999 hits, 2018 World Series champion, now managing Team Israel.
Ian Seymour
Ian Seymour (Ian Albert Seymour, born 1998, Madison, CT) is a Tampa Bay Rays left-handed pitcher drafted 57th overall in 2020 from Virginia Tech; MLB debut June 9, 2025, win at Fenway; 2026: 9-7, 4.21 ERA.
Ichiro Suzuki (鈴木 一朗)
Ichiro Suzuki (鈴木 一朗), born 1973, Japanese outfielder, first Japanese position player in MLB (Mariners, 2001), 2004 record 262 hits, 4,367 combined NPB/MLB hits, elected to Baseball Hall of Fame 2025 at 99.7%.
Indianapolis Indians
Indianapolis Indians, Triple-A International League baseball team and Pittsburgh Pirates affiliate since 2005. Founded 1902, second-oldest MiLB franchise, longest continuous team name, home at Victory Field since 1996.
Infield fly rule
Infield fly rule, baseball rule (OBR 2.00, NCAA 2-48): batter is auto-out on an ordinary-effort infield popup with first and second or bases loaded, under two outs, preventing cheap double plays; enacted 1895.
Inside-the-park home run
Inside-the-park home run (IPH): a home run scored without the ball leaving the field, once common, now under 20 per MLB season; profiled by SABR since 1976.
Intercounty Baseball League
The Intercounty Baseball League (IBL) is a senior baseball league in southwestern Ontario, founded in 1919 and Canada's oldest still-operating amateur league, with 2025 attendance of 249,590.
Interleague play
Interleague play: regular-season MLB games between American League and National League clubs, adopted 1997 and expanded to 46 games per team under the 2023 balanced schedule; AL leads .529, rivalries include Subway Series and Cubs-White Sox.
International baseball federation
International Baseball Federation (IBAF), also IBF, FIBA, AINBA, IBA: world governing body for baseball founded 1938, led baseball into the 1992 Olympics, merged with the ISF into the WBSC on 14 April 2013 in Tokyo.
International League
International League, one of two Triple-A minor leagues (briefly Triple-A East since 2021), 20 teams, tracing to the 1884 Eastern League; champions win the Governors' Cup.
Isaac Collins (baseball)
Isaac Collins (born 1997, Maple Grove, MN) is a switch-hitting Royals outfielder; 2019 Rockies 9th-round pick from Creighton, Brewers Rule 5 claim, 2025 NL ROY finalist, traded to Kansas City December 2025.
Isiah Kiner-Falefa
Isiah Kiner-Falefa (IKF, Izzy), born 1995 in Honolulu, is an MLB utility infielder for the Boston Red Sox; 2020 AL Gold Glove third baseman, formerly Rangers, Yankees, Blue Jays, Pirates; relative of Ralph Kiner.
Isotopes Park
Isotopes Park (Rio Grande Credit Union Field at Isotopes Park, "The Lab") is a 13,500-capacity Triple-A ballpark in Albuquerque, New Mexico, opened 2003, home of the Colorado Rockies-affiliated Albuquerque Isotopes, named for The Simpsons and nuclear science.
Israel national baseball team (נבחרת ישראל בבייסבול)
Israel national baseball team (נבחרת ישראל בבייסבול), Israel's WBC team of mostly American Jewish players; 6th at the 2017 World Baseball Classic, Tokyo 2020 Olympian, 2026 WBC qualifier.
Iván Rodríguez
Iván "Pudge" Rodríguez (born 1971) is a Puerto Rican Hall of Fame catcher (Class of 2017, first ballot, 76.0%). Record 2,427 games caught, 13 Gold Gloves, 14 All-Star selections, 1999 AL MVP, 2003 World Series champion with the Marlins.
J. A. Happ
J.A. Happ (James Anthony Happ, born 1982) is a retired MLB left-handed starting pitcher, 133-100 with a 4.13 ERA over 15 seasons; 20-game winner with Toronto in 2016 and 2018 All-Star.
J. C. Escarra
J.C. Escarra (Juan Carlos Escarra, born 1995, Hialeah, FL) is a Yankees catcher/first baseman who debuted March 29, 2025 at age 29 after Uber driving, substitute teaching, and independent and Mexican league stints.
J. D. Martinez
J.D. Martinez (Julio Daniel Martinez, born 1987) is a former MLB designated hitter and outfielder; six-time All-Star, 2018 World Series champion with Boston, 331 career home runs, and a leading figure of the launch-angle hitting movement.
J. P. Arencibia
J.P. Arencibia (Jonathan Paul Arencibia, born 1986) is a former MLB catcher, Toronto Blue Jays starter 2011-2013 with 80 career home runs, later New York Mets catching coach.
J. R. Richard
J.R. Richard (James Rodney Richard, 1950-2021), Houston Astros pitcher 1971-1980; 1979 NL ERA title and 313 strikeouts; career ended by a July 30, 1980 stroke; Astros Hall of Fame 2019.
J. T. Realmuto
J. T. Realmuto, born Jacob Tyler Realmuto in 1991, is an American catcher for the Philadelphia Phillies known for elite throwing and the second 20-homer, 20-steal season by a catcher.