Keefer was born in Baltimore, Maryland,[1] to Judy and John Keefer III.[4][5] Judy moved to the United States from Hong Kong as a child.[4] Both of Keefer's parents are engineers;[6] they worked at Gilbane Building, a construction and real estate development firm. They often traveled as part of their work and Judy described Keefer as a "latchkey kid".[7] Keefer has an elder sister, Amanda.[4]
Keefer's father was a recreational golfer and introduced his son to the game as a child. The family moved to San Diego, California when Keefer was aged seven, and he began playing golf at The Farms Golf Club. They relocated to San Antonio, Texas when Keefer was 14 and he joined TPC San Antonio.[4] Alongside golf, he played lacrosse until his senior year of high school. He originally intended to become a professional lacrosse player but switched focus to golf after the move to San Antonio.[4] Keefer attended Lady Bird Johnson High School in San Antonio.[8] In 2017, he won the AJGA Sergio and Angela Garcia Foundation Junior Championship and the TJGT Texas Junior Masters. He was No. 10 in the Golfweek rankings of the 2019 recruiting class and signed his National Letter of Intent in November 2018 with Baylor University.[9]
Playing for the Baylor Bears from 2019 to 2024, Keefer was an All-Big 12 selection in 2022 and 2024, and qualified to represent the United States at the 2022 Arnold Palmer Cup.[8] He won medalist honors twice, at the 2021 Rice Intercollegiate and 2023 Valero Texas Collegiate.[10] He had a career stroke average of 71.45, which broke the Baylor program record previously held by Jimmy Walker (71.55).[8] Keefer majored in accounting and became the first men's golfer in Big 12 Conference history to win back-to-back Scholar Athlete of the Year awards.[11]
Professional career
Keefer finished 25th in the 2023–24 PGA Tour University standings, which earned him status on PGA Tour Americas.[8] In his 10 starts during the 2024 PGA Tour Americas season, he placed inside the top-10 nine times, including four runner-up finishes and a win at the CentrePort Canada Rail Park Manitoba Open. He set the record for lowest scoring average on PGA Tour Americas (66.00) and finished first in the points list, earning promotion to the Korn Ferry Tour in 2025.[12] Keefer received an exemption into the Procore Championship in September 2024, which was his PGA Tour debut. He tied for 13th at 9-under 279.[13]
In April 2025, Keefer shot a final-round 64 to total 30-under 254 and win the Veritex Bank Championship by three strokes. This was his first Korn Ferry Tour victory.[10] He made his major championship debut at the 2025 PGA Championship in May, and made his first cut in a major championship at the 2025 U.S. Open in June, where he finished tied-61st. Keefer won his second Korn Ferry Tour title of the season at the NV5 Invitational in July, shooting 26-under 258 to break the tournament scoring record.[14]
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