Overview

• Lucas Glover publicly claimed many PGA Tour players submit backup drivers for USGA tests instead of the ones they use in competition.
• Mike Whan, USGA CEO, said officials record serial numbers and 90% of tested drivers are the ones played on the first tee.
• Random tests of roughly 30 drivers for clubface thinness remain standard practice to enforce equipment compliance.
• Test results are color-coded as green for pass, yellow for nearing limits and red for fail, and are kept confidential.
• The debate follows non-conforming rulings on drivers used by Rory McIlroy and Scottie Scheffler at the PGA Championship.