Juan Monaco retired from the pro circuit in 2017 and will soon be leaving the singles scene.
The former world No. 1 announced his engagement to long-time model girlfriend Diana Arnopoulos.
More: Becker Battles Kyrgios in Twitter Tiff
"My partner for life," Monaco captioned a photo of the couple on Instagram along with a heart and ring emoji. "Mr. and Mrs. Monaco."
The 29-year-old Arnopoulos, who is a French model, posted her response on Instagram.
"YES," she posted in response. "I want to spend the rest of my life with you."
Players ranging from Feliciano Lopez to Mariano Zabaleta posted their congratulations to the happy couple on Instagram.
Monaco, who won nine career titles, retired from the ATP Tour in May of 2017.
Photo credit: Pico Monaco Instagram