Franco Emmanuel Olascoaga, 21, was on his mobile phone during practice at Crippen Elementary School in Porter when he was struck, the Houston Chronicle reported.
The 21-year-old was knocked out of his shoes by the blast and is now in a medically induced coma at the Memorial Hermann Hospital-Texas Medical Center.
A nine-year-old girl, Vanessa Torres, was also taken to hospital after the lightning strike. She is in a fair condition.
Rene Salas, vice president of the Dynamic Soccer Club of Houston, said: "They just heard real loud thunder and a loud popping."
He said the team's first official match of the fall season had been cancel.
The 21-year-old was knocked out of his shoes by the blast and is now in a medically induced coma at the Memorial Hermann Hospital-Texas Medical Center.
A nine-year-old girl, Vanessa Torres, was also taken to hospital after the lightning strike. She is in a fair condition.
Rene Salas, vice president of the Dynamic Soccer Club of Houston, said: "They just heard real loud thunder and a loud popping."
He said the team's first official match of the fall season had been cancel.