Guillermo Vilas is a father again.
The 64-year-old Hall of Famer and wife Phiang welcomed their first son, Guillermo Vilas, Jr., to the world.
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"Meet Guillermo Jr! He was born today at 11:30 hour of Monaco," Vilas tweeted."(He) weighed 4.260 kg. Phiang is perfect! Everything went well. The happy family!"
It looks like baby Guillermo shares his famous father's strong left arm.
Guillermo, Jr. is the couple's fourth child joining daughters Andanin, Lalindao and Intila.
"Being a father is the best thing I do,” Vilas told the Monaco Reporter after a training session with his daugther at the Monte Carlo Country Club.
The four-time Grand Slam champion, who presented Rafael Nadal with his first ATP title trophy and predicted the King of Clay's rise to prominence, owns his own academy in Buenos Aires.
Eldest daughter Andanin is a junior player, who plays with Head racquets just as her father did.
It looks like Andanin likes to hit the heavy topspin forehand as her father did, too.
Vilas and his family split times between homes in Buenos Aires, Paris and Bangkok, which is wife Phiang's hometown.
Photo credit: International Tennis Hall of Fame