However, the Mariners have gotten stronger at the MLB trade deadline, adding arguably the biggest bat on the market in Eugenio Suárez from the Arizona Diamondbacks. Suarez has 36 home runs this season and joins Cal Raleigh in Seattle's lineup, who has an MLB-leading 41 homers entering Thursday.

"It hit me at first - it was hard because of my teammates, but honestly, it motivated me to be better and I knew that here I was going to have an opportunity," Diaz said through Astros' interpreter Otto Loor.

The Houston Astros may look to the St. Louis Cardinals as they eye an All-Star addition ahead of the MLB trade deadline.

The Houston Astros received significant injury news on Thursday, hours before the MLB trade deadline at 6 p.m. ET. With a five-game lead over the Seattle Mariners in the American League West, the Astros are focused on making a deep postseason run in October, but it will be challenging to do so without one of their best hitters.