RJ did but apparently it didn't get him to get his arm strength back according to Wikipedia.
Comeback attempts (2006–2008)[edit]
Following his release from Oakland in 2004, Johnson underwent Tommy John surgery, a procedure more commonly performed on baseball pitchers. A tendon was taken from Johnson's wrist and transplanted into his elbow to replace the injured tendon that resembled "a frayed rope" from overuse. After a year of recovery, Johnson worked out for the Tennessee Titans, but was not signed. Reports suggested his arm strength was still under 50%. In 2006, Johnson was signed by the New York Giants to compete for a roster spot behind starter Eli Manning. Johnson was released before the preseason came to an end. In an NFL.com interview, Johnson vowed to continue his career for as long as he could play at "an NFL level."
In September 2008, Johnson was invited to a Titans workout, along with Joey Harrington and Chris Simms. However, the Titans signed Simms as a backup for veteran Kerry Collins. This was Johnson's last reported NFL workout.