Sister Mary Jo Sobiek has become an overnight internet sensation after throwing a near perfect pitch before the White Sox played the Kansas City Royals on Sunday.

The Marian Catholic School nun was selected for the ceremonial first pitch at Guaranteed Rate Field in Chicago, and her performance was divine.

Before she delivered her jaw-dropping pitch, Sister Mary Jo even showed off a slick trick as she bounced the ball on her inner elbow.

Then the nun wound up and threw a perfect strike to White Sox pitcher Lucas Giolito.

Her moves were so good that Giolito himself called them 'awesome'.

"She had a whole routine,' he told MLB.com. 'She had it planned out."

"I was just lucky to be back there. She threw a perfect pitch. It ended up being great."

Even White Sox manager Rick Renteria had to admit she was 'pretty good', revealing that he spotted the nun practicing before her big moment.

"She had a mitt and a ball. She stepped back at about 45 feet and threw a bullet," he recalled.

"I'm like, 'Wait a minute'. He threw it back to her and she fielded it barehanded. I was like, 'Okay, she looks like she can play a little bit'".

Renteria said he later chatted with Sister Mary Jo and found out she used to play center and short in softball.

He even asked the nun if she would play for the team, and she happily agreed.