The Oakland Athletics made a clutch signing before the trade deadline, an addition they say "sparked the W" against the Texas Rangers on Saturday night.

The A's added 8-year-old August Wold to their roster on a one-day contract through the Make-A-Wish Foundation. Wold, who lives in the Northern California town of Redding, has suffered from a gastrointestinal disorder that’s required numerous surgeries. His dream is to play for the A’s.

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The Make-A-Wish Foundation partnered with the team to get Wold a mock contract and signing, including a press release announcing the deal.

"This close to the trade deadline, we were excited August Wold was still available, so we have signed August to an A's contract to be a member of our 2019 A's team," A’s General Manager David Forst said at a pre-game press conference introducing their newest player.

As the Little Leaguer’s big league dreams were coming true, he boldly predicted that third baseman Matt Chapman would hit a home run during the game, according to the San Francisco Chronicle’s Susan Slusser. And Chapman didn’t disappoint.

The slugger hit his 23rd homer, a two-run shot, off Adrian Sampson in the fifth inning, helping the A’s to a 5-4 victory. In a post-game tweet, the A's wrote, "August Wold joined the team, sparked the W."

As part of the team, Wold donned a green No. 19 Athletics jersey, hung out with players in the clubhouse and watched batting practice on the field. First baseman Matt Olson gave Wold a pair of his gray batting gloves, even though they were a few sizes too big, while pitcher Liam Hendriks helped the young shortstop tape up his bat in the dugout.

Eight-year-old August Wold waits for Oakland Athletics' Liam Hendriks to finish taping his bat in the dugout. (AP Photo/Ben Margot)

The young player eventually stepped into the batter's box and was credited with the first hit of the game – a single off of Oakland infielder Jurickson Profar. Players from both teams watched and cheered as Wold sprinted down the first baseline.

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Wold has Hirschsprung's disease, a birth defect in which the infant is missing some nerve cells in a part of the bowel. He was diagnosed when he was 7.

The 8-year-old’s health is far better and "he's on the road to recovery, hopefully," said his dad, George.

The Associated Press contributed to this report.