The Seattle Mariners play against the Houston Astros in an MLB game tonight. Fans can watch this game for free online.

Randy Arozarena hit a solo home run and Luis Castillo threw 6 2/3 scoreless innings as the Seattle Mariners beat the Houston Astros 6-1.

Luis Castillo reacted to his stellar effort against the Houston Astros in the Seattle Mariners' victory on Friday night.

Look for Randy Arozarena to stay hot vs. Lance McCullers and Houston tonight, per our Astros vs. Mariners predictions for Saturday, July 19, 2025.

BOTTOM LINE: The Seattle Mariners, on a four-game home winning streak, host the Houston Astros. Seattle has a 26-21 record in home games and a 52-45 record overall. The Mariners are 21-8 in games when they did not allow a home run.

“The Astros could use a quality No. 3 starter to slot behind Hunter Brown and Framber Valdez in the rotation,” Reuter wrote. “With one of the thinner farm systems in baseball, a high-reward target like Cabrera could be at the top of their wish list.”

Xavier Neyens took the hour long drive from his home in Mount Vernon, Wash., to visit Astros in Seattle and is ready to get started.