The Houston Astros made the biggest move of Wednesday's trade deadline, acquiring right-hander Zack Greinke from the Arizona Diamondbacks for four prospects.
Greinke joins a fearsome rotation that includes Justin Verlander and Gerrit Cole.
Houston sent right-hander Corbin Martin, right-hander J.B. Bukauskas, first baseman Seth Beer and infielder Josh Rojas to Arizona to complete the deal.
"Zack Greinke's one of the best pitchers in baseball. We had him high on our list," general manager Jeff Lunhow said. "We didn't know if this was even remotely possible, and it really wasn't until the last 48 hours, really the last 24 hours that we started to get traction on something.