Enjoy the game. The Chrome Tour X Retro Collection pays homage to Callaway’s first-ever golf ball, Rule 35. Released in 2000, the Callaway Rule 35 golf balls marked the company’s innovative entry into the ball market with two simple, golfer-focused options: Blue for softer feel and Red for a firmer feel. At the time, “Rule 35” was Callaway’s fictional addition to the official 34 rules of golf: Enjoy the Game. This limited-edition ball brings the iconic Rule 35 design to the 2026 Chrome Tour X, now paired with advanced ball technologies for exceptional ball speed, ultimate control, spin and tee-to-green performance.