For ten years, Brittany Henderson read her sister, Brooke Henderson’s, game without words. Now, someone else will have to learn, as the longest-running sister act in women’s golf is going on intermission, as Brittany is all set to step into a new role in life.

Brittany started caddying for Brooke in 2016 and is now stepping away from her duties as she expects her first child with husband Zach Sepanik in June. Canadian sportswriter Adam Stanley first reported the news on Sportsnet.ca.

Now, John Killeen, a 40-year LPGA caddie with Hall of Famers on his resume, takes over Brooke’s bag after the Hilton Grand Vacations Tournament of Champions in Orlando next week. Brittany will carry the bag one final time at that season opener. She acknowledged the adjustment ahead.

“The unspoken things might not be happening for a while,” she said. “[Killeen] is coming in with a lot of experience.”

While Brittany offered unspoken communication forged across a decade, Killeen brings Juli Inkster, Meg Mallon, Patty Sheehan, and Cristie Kerr on his ledger. He was on the bag when Lizette Salas captured her only LPGA title at the 2014 Kingsmill Championship.

Killeen’s experience matters significantly as Henderson enters 2026 ranked No. 25 in the world, coming off a season that included her CPKC Women’s Open victory in August. She made 19 cuts in 24 events, posted three top-10 finishes, and closed strong with a T5 at the Grant Thornton Invitational and T7 at the CME Group Tour Championship. The numbers suggest good momentum she is carrying into 2026, and now this caddie change suggests intent.

Brooke has won 14 times on the LPGA Tour. Brittany caddied for 13 of them. The lone exception came in August 2015 at the Cambia Portland Classic, when Brittany was competing in the field after receiving a sponsor invite. Brooke, just 17, qualified on Monday—and proceeded to dismantle the tournament by eight shots, the largest margin of victory on tour since 2012.

A family friend, Bunk Lee, carried the bag that week. When it ended, Brittany abandoned her own playing career on the Symetra Tour to loop full-time for her younger sister. The only other absence came at the 2021 Meijer LPGA Classic due to visa complications. Brooke missed the cut.

The history explains why this transition carries weight beyond logistics.

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Brooke Henderson’s Asian Swing will test the new caddie-player bond

Killeen’s tenure begins with a demanding stretch. The LPGA’s spring Asian swing opens February 19 with Honda LPGA Thailand at Siam Country Club, followed by the HSBC Women’s World Championship in Singapore and the Blue Bay LPGA in China. Three events across three countries in three weeks. These weeks will bring in a new caddie with a new rhythm.

Henderson has previously credited her sister for keeping her grounded during pressure moments. “Brit was really key, reminding me that ‘we’re still in it; just relax and hit good shots,'” she once said.

That voice will be absent in Pattaya, Singapore, and Hainan Island. In its place: Killeen’s deliberate, old-school course management—a tactical playbook refined across four decades with some of the game’s greatest players.

Brittany may return for select late-season events, logistics permitting. But 2026 belongs to the Killeen era—not as a stopgap, but as a professional reset.  The pregnancy is the catalyst. The recalibration is the story.