Shane Lowry's Caddie

Irish professional golfer Shane Lowry plays for both the PGA Tour and the European Tour as of April 2025. He represented Ireland as an amateur and competed in the European Youths' Team Championship in 2006 and the European Boys' Team Championship in 2005. He also participated in the Eisenhower and Bonallack trophies in 2008. Also, at the 2009 3 Irish Open, he made his professional debut on the European Tour as an amateur. From 2007 to 2009, he won five amateur events and played college golf at the Athlone Institute of Technology.

Lowry turned professional in 2009 and joined the European Tour, while he joined the PGA Tour in 2015. As of April 2025, he has won seven professional wins, including the 2015 WGC event and the 2019 Open Championship. He is ranked world No. 13 as of April 2025, with a career-high world ranking of No. 12 in March 2025, according to the Official World Golf Rankings (OWGR). He also represented Ireland at the 2020 Tokyo Olympics and the 2024 Paris Olympics, finishing 22nd and 26th, respectively.

Shane Lowry’s Caddie

Shane Lowry's caddie is Darren Reynolds as of April 2025.

Reynolds has collaborated with players like Roger Chapman, Paul McGinley, and Paul Dunne. He has also worked with Antoine Rozner for two DP World Tour victories and even briefly with Lowry as a stand-in for Martin before joining full-time.

Lowry's previous caddie was Brian "Bo" Martin; their partnership began in late 2018. Martin was a former caddie for Peter Lawrie and Gary Murphy. Before moving on to Dane Lucas Bjerregaard, who also happened to win the same tournament in 2017, he also worked with Frenchman Alex Levy, who won the Portugal Masters in 2014.

Dermot Byrne, an Irishman, was Lowry's first looper; the two had been together for around nine years. The collaboration formally began after Lowry emerged victorious in the 2009 amateur Irish Open. But as his game declined, it appeared that their bond did too. It came to an official end in July or August of 2018. Alan, Lowry's brother, temporarily took over before Martin took over a full-time role.

However, Lowry's management company, Horizon Sports Management, announced the pair's 2023 split. At the time, it was said that they had lost their "chemistry" or "spark," which was the cause of their split.