Rubuta ci gaba don wannan sakin layi - Mejia ya yi gasa don maza 4 × 400 m relay
a Wasannin Olympics na bazara na 2008 a Beijing, tare da abokan wasansa Yoel Tapia, Carlos Yohelin Santa, da Arismendy Peguero. Ya gudu a mataki na uku na zafin jiki na biyu, tare da lokacin raba mutum na 46.31 seconds. Mejia da tawagarsa sun gama tseren a matsayi na karshe don mafi kyawun lokacin kakar wasa ta 3:04.31, sun kasa ci gaba zuwa wasan karshe.