|San Diego Padres – No. 66|
|Born: November 21, 1989|
|June 24, 2018, for the San Diego Padres|
|Career statistics |
(through April 11, 2019)
|Earned run average||3.35|
Baseball America rated Stock as the best baseball player of his age in the country when he was 13, 14, and 15 years old, and he played for the United States junior national baseball team in 2004 and 2005. He was named Baseball America's 2005 Youth Player of the Year at 15 years of age. In both 2007 and 2008 he was a Cape Cod Baseball League All Star.
The St. Louis Cardinals selected him in the second round, with the 67th overall selection, of the 2009 MLB draft. In 2009 he was both a Topps Short-Season/Rookie All-Star and an Appalachian League All-Star at catcher. In 2012, the Cardinals transitioned Stock into a full-time pitcher.
Early and personal life
Stock was born in Bellevue, Washington, his hometowns growing up were Agoura Hills and Westlake Village, California, and he is Jewish. His parents are Gregg (an engineer) and Randi Stock. He has two brothers, Richard (also a professional baseball player, who has played in the Cleveland Indians organization, as well as in the independent American Association of Independent Professional Baseball and Can-Am League) and Jacob, and two sisters, Sasha and Sabina.
As a 12-year-old, Stock was throwing an 80 mph fastball. In 2002, he threw a no-hitter to lead Agoura to an 11–1 victory over Taiwan in the Pony Baseball's Bronco League World Series (ages 11–12) championship game. Baseball America rated him as the best baseball player of his age in the country when he was 13 years old in 2003, 14 years old in 2004, and 15 years old in 2005. Stock played for the United States junior national baseball team in 2004 (as the team's youngest player ever, at 14 years of age, and number one pitcher) and 2005.
High school and college
Stock attended Agoura High School in Agoura Hills, and played for the school's Agoura High Chargers baseball team as a cleanup-batting catcher and a pitcher. In 2003, his sophomore season, he had a .405 batting average with eight home runs, and on the mound was 5–1 with a 2.85 ERA as batters hit .190 against him. In 2004, his junior year, he batted .456 with six home runs and 25 RBIs and caught 70 percent of would-be basestealers. He also had a 5–3 win–loss record and a 2.69 earned run average (ERA) as a pitcher, as his fastball reached 95 miles per hour (153 km/h) and batters hit .218 against him. He was named Baseball America's 2005 Youth Player of the Year at 15 years of age (the first time the award was won by a high school underclassman), Los Angeles Times Player of the Year, and All-California Interscholastic Federation (CIF) First Team as he developed a reputation for hitting 400-foot home runs with wood bats. He graduated from Agoura a year early, an honor student with a 3.8 GPA and a 1410 SAT score.
Stock passed up what some felt was a certain first-round selection in the 2007 MLB draft, to instead enroll a year early at the age of 16, in the University of Southern California (USC) in its Resident Honors Program, which allows 30 high school students to enroll a year early, the first athlete to do so in USC history. He began college while he was still wearing braces. He played college baseball for the USC Trojans as a catcher and a pitcher. In three years at USC, Stock had a .263 career batting average, threw out 33.8% of baserunners, and as a pitcher (and sometimes closer, sometimes starter) was 8–7 with a 3.38 ERA and nine saves as opponents batted .228 against him. In the summers of 2007 (as the youngest player in the league) and 2008 he played for the Cotuit Kettleers of the Cape Cod Baseball League, where both seasons he was an All Star.
The St. Louis Cardinals selected Stock in the second round, with the 67th overall selection, of the 2009 MLB draft, and he signed for a $525,000 signing bonus. In 2009, as a 19-year-old he was both a Topps Short-Season/Rookie All-Star and an Appalachian League All-Star at catcher, as he batted .322/.386/.550 with 7 home runs (tied for third among 2009 Cardinals draft picks) for the Johnson City Cardinals. Baseball America rated him the 10th-best prospect in the Cardinals organization. He played as a catcher until 2011, batting .241 in 680 at bats.
In 2012, the Cardinals transitioned Stock into a full-time pitcher. In 2013, with the Peoria Chiefs in the Midwest League he was 0–1 with a 2.30 ERA, and with the Palm Beach Cardinals in the Florida State League he was 2–0 with a 4.37 ERA. The Cardinals released him in December 2014. Stock played in 2015 for the Pittsburgh Pirates organization, and in 2016 for the New Jersey Jackals of the Can-Am League, an independent baseball league, for whom he was 1–2 with a 2.85 ERA in 60 innings over 52 games (a league record). He said he never thought about quitting, not when he was released or even when he was playing independent baseball in New Jersey. Stock said: “Mostly because what else is there that’s better than playing baseball? I played a year of independent baseball, and that’s about as low on the totem pole as you can get but it was one of the best times I’ve had playing baseball. There was no thought about stopping." He recalled that "One offseason, I was living in my parents' basement and I was playing video games and my mother said, 'Go out and do something," and I said, 'Mom, relax. I'm going to play in the Major Leagues someday.'"
The San Diego Padres signed him before the 2018 season with a non-roster invitation to spring training. In spring training, his fastball reached 100 mph. Stock began the 2018 season playing for the San Antonio Missions of the Class AA Texas League, and received a midseason promotion to the El Paso Chihuahuas of the Class AAA Pacific Coast League. Between the two teams in 2018, before he was called up to the major leagues he was 1–0 with 9 saves and a 1.69 ERA in 32 relief appearances over 37.1 innings, in which he gave up 22 hits and struck out 42 batters.
The San Diego Padres promoted Stock to the major leagues on June 24, 2018, and Stock made his major league debut that day at 28 years of age, nine years after he was drafted as a catcher. For the 2018 season he was 1–1 with a 2.50 ERA in 32 relief appearances over 39.2 innings, in which he struck out 38 batters. He threw 11 of the 12 fastest pitches by San Diego pitchers in 2018. In 2018, he had the second-lowest swing rate for his in-strike-zone sliders of any pitcher in baseball (43.1%), behind only Aroldis Chapman (42.5%).
On April 1, 2019, Stock threw a fastball that was measured at 100.6 miles per hour (161.9 km/h), the second-fastest pitch Statcast had ever recorded for a Padre (behind only a 100.8 miles per hour (162.2 km/h) pitch by Jose Dominguez in 2016). He regularly reaches 100 miles per hour (160 km/h) with his fastball.
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