The 2016 World Series champions still have their core in 2019, but have now seem to have an aging team. They can still contend, though. This is how they were built.
Contreras signed as an amateur free agent in July 2009.
Davis signed in July 2011 as an amateur free agent.
Rizzo was acquired in January 2012 from the Padres with Zach Cates for Andrew Cashner and Kyung-Min Na.
Zobrist signed a four year deal with the Cubs in December 2015.
Baez was the 9th overall pick in the 2011 draft.
Bryant was the 2nd overall pick in 2013.
Descalso signed a three year deal with the Cubs in December.
Bote was drafted in the 18th round in 2012.
Heyward signed an eight year deal in December 2015.
Schwarber was drafted 4th overall in 2014.
Albert Almora Jr.
Almora was drafted 6th overall in 2012.
Zagunis was drafted in the 3rd round in 2014.
Hendricks was acquired in July 2012 from the Rangers with Christian Villanueva for Ryan Dempster.
Hamels was acquired in July from the Rangers with cash for Eddie Butler, Rollie Lacy and Alexander Ovalles.
Darvish signed a six year deal with the Cubs in February 2018.
Quintana was acquired from the White Sox in July 2017 for Eloy Jimenez, Dylan Cease, Bryant Flete and Matt Rose.
Chatwood signed a three year deal with the Cubs in December 2017.
Collins signed with the Cubs in March.
Webster signed with the Cubs in March 2018.
Ryan signed with the Cubs in January 2018.
Rosario was claimed off waivers from the Twins in November 2017.
Kintzler was acquired in July from the Nationals for Jhon Romero.
Cishek signed with the Cubs in December 2017.
Brach signed with the Cubs in February.
Strop was acquired in July 2013 from the Orioles with Jake Arrieta for Scott Feldman and Steve Clevinger.
Lester signed a six year deal with the Cubs in December 2014.
Barnette signed with the Cubs in February.
Morrow signed a two year deal with the Cubs in December 2017.