Alex Bregman had just hit a two-run double to put Houston up 2-0 and Tucker was on third with two outs in the third inning.
"It was working good and then it got loud and ... it didn't work," Severino said.
Tucker saw Severino was distracted and tried to sneak home. Severino had the PitchCom earpiece in his right hand and had to quickly maneuver to get the baseball back in his throwing hand. He threw home while still holding his cap, and his throw narrowly beat Tucker and ended the inning.
"I saw him when he was like halfway, but nobody's faster than the ball," Severino said.
Severino was asked about making the throw while holding the device and his cap.
"I'm very good with my hands," he said with a laugh.
Yankees manager Aaron Boone raved about the heads-up play.
"Sevy didn't panic and reacted the right way and made the play," he said.
Houston manager Dusty Baker thought it was a good chance for Tucker to take.
"If he throws that ball any kind of way errantly he's safe," Baker said. "I urge our guys to play aggressively and I thought he still had a chance to be safe. ... That was a bold play that almost worked."
The PitchCom digital pitch-calling devices, which transmit signals from the catcher to the pitcher, were introduced to the majors this season. The system was designed to halt sign stealing in the wake of the Astros' 2017 scandal.