Yu Darvish hasn't closed the door on opting out of this Chicago Cubs season — particularly because of the COVID-19 testing delays in MLB – Orlando Sentinel
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Yu Darvish receives apologies after Houston Astros cheating allegations surface : r/CHICubs
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Cubs trade-deadline thoughts, prospects from the Yu Darvish deal and Caleb Kilian's status - The Athletic
Baseball America Prospect Report — July 28, 2021 — College Baseball, MLB Draft, Prospects - Baseball America
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Cubs' Yu Darvish out for the season with elbow injury
Cubs minor league affiliates unveil rosters as season approaches - Marquee Sports Network
One and done for Cubs right-hander Yu Darvish at Four Winds Field