Chicago Tribune
Yu Darvish sharp in return to Wrigley Field
The story behind 'When It Happens' and how the motivated Cubs are
History of the Chicago Cubs - Wikipedia
Column: With Wrigley Field at full capacity, fans finally return
San Diego Padres to acquire Yu Darvish in trade with Chicago Cubs
Chicago Baseball – August-September 2018 Issue by Chicago Baseball
Yu Darvish signs with Cubs
Cubs' Yu Darvish out for the season with elbow injury
Chicago Tribune