The ball cleared the wall right at the base of the right-field foul pole and was initially called fair, though right fielder Kole Calhoun and first baseman Albert Pujols put their hands in the air to signal that it was foul.
A crew-chief review backed up what the replay showed -- the ball curled just outside the foul pole as it descended and was indeed foul. Springer wound up striking out.
"Our information was it was as close as you can get to being fair but not," Astros manager A.J. Hinch said. "Unfortunately, we need the break to go our way, but if the ball is foul, it's foul."
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.