USA great retires after nearly being killed on rugby pitch

USA Sevens stalwart Zack Test has announced his retirement following a severe brain bleed as the result of a head collision.

In a heartfelt Instagram post, the 28-year-old detailed his decision to step away from rugby.

"For those who are unaware, I suffered a head collision playing against Uruguay in February that resulted in severe brain bleeding. It nearly cost me my life," Test wrote.

"After hundreds of hours of rehab and treatment, I am proud to say I am physically and mentally fully functional.

"It’s hard to describe how thankful I am to be alive and living a normal life.

"After a long discussion with my loved ones unfortunately, I am retiring from the sport of rugby. Making this decision has been the single hardest act I have ever had to do, I simply cannot risk another injury.

"Players, parents, coaches, and trainers all need to increase awareness of head injuries in the sport and I am committed to help spread the information."

Test steps away following an illustrious 14-year career with the USA Eagles sevens team, where he ranks second in tries and points scored.

The California native competed in seven tests for the Eagles 15-man side and a USA record 62 Sevens World Series events.