 In the late 1960s, Wilson popularized the T-2000 steel racket with wire wound around the frame to make string loops, after having purchased the design from René Lacoste, who produced the racket first in a more limited run.It was popularized by the top American player Jimmy Connors and was also, prior to Connors using it, by Billie Jean King in her early career.Many players said it lacked control but had more power, when compared with wood frames of the period.