Reds rumors: Luis Castillo and Tyler Mahle are off limits
A Tyler Mahle extension is unlikely, but may be a good idea - Red Reporter
Minnesota Twins' top prospects may be involved in Tyler Mahle trade talks with Reds
MLB Trade Rumors: Reds Open to Sonny Gray Deal; Tyler Mahle, Luis Castillo Off Limits, News, Scores, Highlights, Stats, and Rumors
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MLB Trade Rumors: Luis Castillo, Tyler Mahle Interest Giants; Mets Linked to Mahle, News, Scores, Highlights, Stats, and Rumors
Reds will consider trading Sonny Gray; Castillo, Mahle off limits - Redleg Nation
Making an early Reds roster projection while they stand pat on player moves - The Athletic
Reds shut down Luis Castillo after pitching nearly 170 innings
4 trade destinations for Reds pitcher Sonny Gray
Mahle shines in 6-3 win as Reds spoil Braves' celebration - The San Diego Union-Tribune