Signed by the Oakland Athletics as an amateur free agent in 1993. Signed as a free agent with the Baltimore Orioles on 18 December 2003.
Traded from the Baltimore Orioles to the San Diego Padres. Tejada rejoined the Orioles in January after spending the last two seasons with the Houston Astros.
(December 12) Traded from the Baltimore Orioles to the Houston Astros.