Question: Clark is the official team mascot of Major League Baseball's which sports team, he was introduced that day at the Advocate Illinois Masonic Medical Center's pediatric developmental center along with some of the Cubs' top prospects such as number one draft pick Kris Bryant?

Context articles: Draft Day
Miles (mascot)
Baseball (Intellivision video game)
Ray Fosse
List of Chicago Cubs first-round draft picks
Chicago Cubs
Interleague play
Clark (mascot)
Kris Bryant
Arizona Fall League

Draft Day is a 2014 American sports drama film directed by Ivan Reitman and starring Kevin Costner.
 The premise revolves around the general manager of the Cleveland Browns (Costner) deciding what to do after his team acquires the number one draft pick in the upcoming National Football League draft.
Miles is one of two official mascots of the Denver Broncos, an American football team in the National Football League (NFL).
 He was developed in the early 1990s and made his first public appearance at the 1995 Pro Bowl as a Team NFL Hero.
 Team NFL Heroes were a line of mascot-like characters created by NFL Properties; most of the characters only lasted a season or two but a handful ended up being adopted as official mascots by their respective teams, either immediately after the Team NFL Heroes project was canceled or years later with Miles being an example of the latter.
 Before the Broncos unveiled him as their official team mascot some changes to his appearance were made, such as changing his fur from orange to white and switching his jersey number from 0 to 00.
Baseball (released as Major League Baseball) is a multiplayer sports video game produced by Mattel and released for its Intellivision video game system in 1980.
 The best-selling title in the console's history, with over 1 million copies sold, "Baseball" put players in control of a nine-man baseball team competing in a standard nine-inning game.
 When first released, Mattel obtained a license from Major League Baseball, although the only trademarked item used was the MLB logo on the game's box art.
 No official team names or player names were used in the game.
Raymond Earl Fosse (born April 4, 1947 in Marion, Illinois) is an American former professional baseball player and current television sports color commentator.
 He played in Major League Baseball as a catcher.
 He was drafted in the first round of the 1965 amateur draft by the Cleveland Indians.
 He was the Indians' first ever draft pick, as 1965 was the first year of the Major League Baseball Draft.
 He batted and threw right-handed.
 He has been a television and radio broadcaster for the Oakland Athletics since 1986.
The Chicago Cubs are a Major League Baseball (MLB) franchise based in Chicago, Illinois.
 They play in the National League Central division.
 Since the institution of MLB's Rule 4 Draft, the Cubs have selected 60 players in the first round.
 Officially known as the "First-Year Player Draft", the Rule 4 Draft is MLB's primary mechanism for assigning amateur baseball players from high schools, colleges, and other amateur baseball clubs to its teams.
 The draft order is determined based on the previous season's standings, with the team possessing the worst record receiving the first pick.
 In addition, teams which lost free agents in the previous off-season may be awarded compensatory or supplementary picks.
The Chicago Cubs are an American professional baseball team based in Chicago, Illinois.
 The Cubs compete in Major League Baseball (MLB) as a member club of the National League (NL) Central division.
 The team plays its home games at Wrigley Field, located on the city's North Side.
 The Cubs are one of two major league teams in Chicago; the other, the Chicago White Sox, is a member of the American League (AL) Central division.
 The Cubs, first known as the White Stockings, was a founding member of the NL in 1876, becoming the Chicago Cubs in 1903.
Interleague play in Major League Baseball refers to regular-season baseball games played between an American League (AL) team and a National League (NL) team.
 Interleague play was first introduced in the 1997 Major League Baseball season.
 Prior to that, matchups between AL teams and NL teams occurred only during spring training, the All-Star Game, other exhibition games (such as the Hall of Fame Game in Cooperstown, New York), and the World Series.
 Unlike modern interleague play, none of these contests, except for the World Series, counted toward official team or league records.
Clark is the official team mascot of Major League Baseball's Chicago Cubs.
 He was announced on January 13, 2014 as the first official mascot in the modern history of the Cubs franchise.
 He was introduced that day at the Advocate Illinois Masonic Medical Center's pediatric developmental center along with some of the Cubs' top prospects such as number one draft pick Kris Bryant and Albert Almora, Jorge Soler, Mike Olt and Eric Jokisch.
 Over a dozen Cubs prospects were attending the Cubs' Rookie Development Program that week.
 The Cubs become the 27th team in Major League Baseball to have a mascot, leaving the Los Angeles Angels, Los Angeles Dodgers and New York Yankees as the remaining franchises without mascots.
 According to the Cubs' press release, Clark is a response to fan demands (expressed via surveys and interviews) for more kid-friendly elements at Wrigley Field Cubs games to keep pace with games in other cities that have more to offer youth fans.
Kristopher Lee Bryant (born January 4, 1992) is an American professional baseball third baseman for the Chicago Cubs of Major League Baseball (MLB).
 Bryant attended the University of San Diego, where he played college baseball for the Toreros, and won the Dick Howser Trophy and Golden Spikes Award his junior year in 2013.
 The Cubs selected him number-two overall in the 2013 MLB draft and he quickly became one of the top prospects in baseball.
 Bryant made his major league debut in 2015 and won the National League Rookie of the Year Award.
 He won a World Series championship with the Cubs in , and was named the National League Most Valuable Player.
The Arizona Fall League is an off-season league owned and operated by Major League Baseball which operates during the autumn in Arizona, United States, at six different baseball complexes.
 The Arizona Fall League attracts many of the top prospects in minor league baseball.