But Vidro says he didn't quit and the team refuses to disband. Players and parents held a protest at the league's field on Saturday urging the league to let Jericho pitch.
"He's never hurt any one," Vidro said. "He's on target all the time. How can you punish a kid for being too good?"
The controversy bothers Jericho, who says he misses pitching.
"I feel sad," he said. "I feel like it's all my fault nobody could play."
Jericho's coach and parents say the boy is being unfairly targeted because he turned down an invitation to join the defending league champion, which is sponsored by an employer of one of the league's administrators.
Jericho instead joined a team sponsored by Will Power Fitness. The team was 8-0 and on its way to the playoffs when Jericho was banned from pitching.
"I think it's discouraging when you're telling a 9-year-old you're too good at something," said his mother, Nicole Scott. "The whole objective in life is to find something you're good at and stick with it. I'd rather he spend all his time on the baseball field than idolizing someone standing on the street corner."
League attorney Peter Noble says the only factor in banning Jericho from the mound is his pitches are just too fast.
"He is a very skilled player, a very hard thrower," Noble said. "There are a lot of beginners. This is not a high-powered league. This is a developmental league whose main purpose is to promote the sport."
Noble acknowledged that Jericho had not beaned any batters in the co-ed league of 8- to 10-year-olds, but say parents expressed safety concerns.
"Facing that kind of speed" is frighteneing for beginning players, Noble said.
League officials say they first told Vidro that the boy could not pitch after a game on Aug. 13. Jericho played second base the next game on Aug. 16. But when he took the mound Wednesday, the other team walked off and a forfeit was called.
League officials say Jericho's mother became irate, threatening them and vowing to get the league shut down.
"I have never seen behavior of a parent like the behavior Jericho's mother exhibited Wednesday night," Noble said.
Scott denies threatening any one, but said she did call the police.
League officials suggested that Jericho play other positions, or pitch against older players or in a different league.
Local attorney John Williams was planning to meet with Jericho's parents Monday to discuss legal options.
"You don't have to be learned in the law to know in your heart that it's wrong," he said. "Now you have to be punished because you excel at something?"