The Chicago Cubs are set to sign free-agent pitcher Yu Darvish to a six-year, $126 million deal, according to multiple reports Saturday. Darvish, 31, joins a starting rotation that includes Jon Lester, Kyle Hendricks, Jose Quintana and Tyler Chatwood. Last season, Darvish went 10-12 with a 3.86 ERA in 31 starts with the Rangers and Dodgers.