It was perhaps the most shocking individual collapse of the 2019 season.



Entering September, Astros left-hander Wade Miley had a 3.06 ERA, third in the American League. But in the final month, he posted a 16.68 ERA, recording three outs or fewer in three of his five starts.



“I couldn’t get an out,” Miley said. “I couldn’t get anybody to swing and miss at anything.”



He watched video. He consulted with Astros officials. But he had no idea what was wrong until a former teammate sent him a text message after his final regular-season start:



Check your glove.



Miley, 33, thought he had checked everything. He maintained to reporters several times in September he was not tipping pitches. But it turned out that was exactly his problem.



His miserable September did not prevent the Reds from signing him to a two-year, $15 million free-agent contract, an agreement that was finalized Wednesday and marked quite...