Question: When was the inception of J. D. Martinez' team?

Context articles: Joe A. Martinez
Brenda Martinez
Tom Martinez
Mercurio Martinez
Madaling Araw
J. R. Martinez
Arizona Diamondbacks
Tippy Martinez
List of songs recorded by Melanie Martinez
J. D. Martinez

Joseph Anthony Martinez (born April 10, 1975 in Apple Valley, California) is the ring announcer for Golden Boy Promotions' "Boxeo Estelar" on Estrella TV.
 A Communications graduate of California State University, Fullerton, Martinez began his professional career in 1996 as both the public address announcer for the Lake Elsinore Storm Minor League Baseball team (a San Diego Padres affiliate) and various Cal State Fullerton athletic programs.
 He continues to announce for the Storm and retired from Cal State Fullerton in 2014.
Brenda Martinez (born September 8, 1987) is an American track and field athlete, specializing in middle distance races.
 Born in Upland, California.
 She won a bronze medal in the 800 meters at the IAAF World Championships in Moscow, 2013.
 She also represented the USA at the 2012 IAAF World Indoor Championships in the 1500 meters.
 On February 7, 2015 she set a world record in the Distance medley relay at New Balance Indoor Grand Prix.
 In 2015 started Big Bear Track Club and recruited their first athlete Boris Berian.
 In 2016, Martinez qualified for the U.S. Olympic team competing in the 1500 meters after beating Amanda Eccleston by .03 seconds.
Tom Martinez (February 21, 1946 – February 21, 2012) was an American football coach.
 He coached at the College of San Mateo until 2005, when he retired due to health concerns.
 He coached at the College of San Mateo after Bill Walsh and John Madden.
 The College of San Mateo Football program traditionally has a very high ranking team and draws players from all over the country.
 It is interesting to note that NFL Alumni John Madden, of the Oakland Raiders & Bill Walsh, of the SF 49ers, both played & coached at the College of San Mateo early in their careers.
 Bill Walsh was claimed to be the best NFL Coach ever and later retired from the 49ers to become the athletic director at Stanford University.
 (Ref.
 the College of San Mateo Football & Sports Hall of Fame websites for info on Martinez, Walsh, Madden & others).
 Prior to the passings of Tom Martinez, he was inducted into the College of San Mateo Sports Hall of Fame.
 Many of his former College of San Mateo Football Players remember Tom as taking a Military Drill Sergeant type approach to Coaching at the College level.
 Tom had a passion for conducted private coaching sessions with quarterbacks of all ages & from all around the country.
Mercurio J. Martinez, Jr., often known as Merc Martinez (born July 25, 1937), is an educator, rancher, and businessman from his native Laredo, Texas.
 From 1991 to 2002, he was the County Judge of Webb County in South Texas.
Madaling Araw ("Dawn") is a 1909 Tagalog-language novel written by Filipino novelist Iñigo Ed.
 Regalado.
 The 368-page novel was published in Manila, Philippines by the Aklatang J. Martinez (J. Martinez Library) during the American period in Philippine history (1899-1946).
 "Madaling Araw" won for Regalado a "Panitikan Series" (Literature Series) Philippine National Book Award.
 The novel is both a romance novel and a political novel.
Jose Rene "J. R." Martinez (born June 14, 1983) is an American actor, motivational speaker, and former U.S. Army soldier.
 Starting in 2008, he played the role of Brot Monroe on the ABC daytime drama "All My Children".
 He is the winner of Season 13 of ABC's "Dancing with the Stars".
 Martinez served as the Grand Marshal of the 2012 Rose Parade.
 He is currently costarring on the syndicated action series "SAF3".
The Arizona Diamondbacks, often shortened as the D-backs, are an American professional baseball franchise based in Phoenix, Arizona.
 The club competes in Major League Baseball (MLB) as a member of the National League (NL) West division.
 Since the team's inception in 1998, the franchise has played home games at Chase Field, formerly known as Bank One Ballpark.
 The Diamondbacks have won one World Series championship (in 2001), becoming the fastest expansion team in the Major Leagues to win a championship, doing it in only the fourth season since the franchise's inception in the 1998 Major League Baseball season.
Felix Anthony "Tippy" Martinez (born May 31, 1950 in La Junta, Colorado), is a retired professional baseball pitcher.
 Martinez, who threw left-handed, pitched fourteen seasons in Major League Baseball between 1974 and 1988, primarily as a relief pitcher.
 The majority of his career (1976–86) was spent as a member of the Baltimore Orioles, where he was a member of the Baltimore team that won the 1983 World Series.
Melanie Adele Martinez is an American singer and songwriter.
 Melanie Martinez auditioned for the American television vocal talent show" The Voice" and became a member of Team Adam.
 Within the fifth week, she was eliminated which subsequently led to her beginning independent work on original material.
 In 2014, she released "Dollhouse", her debut EP featuring the singles "Dollhouse" and "Carousel", which appeared on the trailer for the television series "".
 In 2015, Martinez released her conceptual debut album titled "Cry Baby", featuring the critically acclaimed lead single "Pity Party", along with other singles "Soap" and "Sippy Cup".
Julio Daniel Martinez (born August 21, 1987) is an American professional baseball right fielder for the Arizona Diamondbacks of Major League Baseball (MLB).
 He previously played for the Houston Astros and Detroit Tigers.
 Martinez is of Cuban descent.
 He is one of 18 players in MLB history to hit four home runs in a single game.