And the player is adamant that he didn't mean to do anything wrong.
"I was a poor kid," Tejada said. "I wanted to sign a professional contract, and that was the only way to do it.
"I didn't want or mean to do anything wrong. At the time, I was two years older than they thought."
"It's something that happened the first time I signed my contract. And now I feel like I'm 25 years old, maybe younger.
"I feel my legs are stronger than I used to be feeling. I feel great. I have a lot of energy."
And Houston General Manager Ed Wade was sanguine about the deception.
"It was brought to our attention that the date we carry for Tejada, the year of birth, is incorrect," Wade said.
"We told Miguel we were going to go ahead and make the appropriate changes and all the information was put forward. But the fact of the matter is he's playing like he was 25."