Musgrove posted the letter on social media.
It reads in part, "You have shown me a whole new meaning of the word family. The Houston Strong will always have a special place in my heart."
Thanks for the memories H-Town. Waddup Steel City! pic.twitter.com/upXWFVTuUJ— Joe Musgrove (@ItsbuccnJoe59) January 14, 2018
The Astros traded Musgrove and three other players, third baseman Colin Moran, reliever Michael Feliz and minor league outfielder Jason Martin, for Pirates pitcher Gerrit Cole over the weekend.
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