Easy one. Over time, many items formerly made of wood have been replaced. Tennis racquets is one of them. When was the last wooden tennis racquet used at Wimbledon?
I played on my High School tennis team (bottom of the top ladder to be truthful). I hung up my competition racket when I graduated in 1977. I believe the woodie was hung up for good about a decade later. Borg was one of the last greats to use one as I recall. But I was a big Jimmy Connors fan...and yes, I played with a T-2000...and still have it.