Ex-Astros OF/3B J.D. Davis INSISTS he NEVER saw any of his Houston teammates cheat ... despite 'Stros pitcher Mike Fiers claim the squad used high-tech gadgets to steal signs.
Davis -- now a member of the New York Mets -- was with the Astros from 2017-2018 ... smack in the middle of when the team's accused of cheating.
Remember, Fiers -- a starting pitcher -- recently told The Athletic that the 2017 Astros used a camera to steal signs from opposing catchers ... and then relayed the info (what pitch was coming) to 'Stros batters by banging on a garbage can.
The allegation sparked outrage ... and a massive MLB investigation.
But, Davis -- who was at a Mets children's holiday party in NYC Wednesday -- says despite the super-serious allegation, he simply never saw anyone cheat.
"I wasn't aware of anything and even if I was, even if there was, I wish I would've known because I batted only like .180, .200 or something like that," Davis says.
"But, I really have no idea or no clue."
Davis -- who had a monster year with the Mets in 2019 -- struggled with Houston in 2017 ... hitting .226 in his 68 plate appearances.
Davis says he was totally caught off guard by the sinister allegations.
"Sure, I was surprised about it, but I really have no idea. I was kind of like the freshman among the seniors and everything. I really had no idea what was going on or what's really happening, but that's an MLB investigation."