What is ‘the Hammer’ in TGL? An explanation of the innovative rule

TGL golf pros Ludvig Aberg, Shane Lowry and Wyndham Clark of The Bay Golf Club with Hammer during their 2025 TGL match against the New York Golf Club at SoFi Center.

The Bay Golf Club won the debut TGL match... and used the Hammer for the first time.

Brennan Asplen/TGL/TGL Golf via Getty Images

Kevin Cunningham

Kevin Cunningham

As senior managing producer for GOLF.com, Cunningham edits, writes and publishes stories on GOLF.com, and manages the brand’s e-newsletters, which reach more than 1.4 million subscribers each month. A former two-time intern, he also helps keep GOLF.com humming outside the news-breaking stories and service content provided by our reporters and writers, and works with the tech team in the development of new products and innovative ways to deliver an engaging site to our audience.