• Nickname is P.
• Father, Ioannis, was a basketball player and is now a chemical engineer; mother, Irene, is a secretary.
• Watched countryman Marcos Baghdatis reach Australian Open final and was inspired to play tennis at age 9.
• Also played football and did cycling and judo until age 15, saying those sports helped with hand-eye coordination and discipline: "I think I first became an athlete and then a tennis player."
• Trained at Herodotou Tennis Academy with coach Demetris Herodotou since he started playing tennis.
• Four-time All-American at Wake Forest University (2016-19). Studied communications, but says his favourite subject was psychology.
• Playing on his home courts, led Demon Deacons to 2018 NCAA team title and won 2018 NCAA singles title over teammate Borna Gojo.
• Says that his time at Wake Forest was "the best four years of my life."
• Favourite surface is hard, shot is dropshot and tournament is Australian Open.
• Lists Melbourne as his favourite city on tour.
• Idol growing up was Roger Federer.
• If he wasn’t a tennis player, he would be a casino owner. Says that sleight of hand is his secret talent.
• Favourite movie is The Usual Suspects and favourite TV show is La Casa de Papel.
• Enjoys football and supports Chelsea.
• Favourite food is souvlaki, but guilty pleasure is eating Chipotle.
• Says that his best quality is that he's kind and his worst quality is that he's disorganised.
• Tattoo: The four card suits (heart, diamond, spade, club) on right wrist.
• Owns the Dealt Exclusive Playing Cards company, which sells luxury playing cards (DealtPlayingCards.com):

"I customize playing cards. It all started when I was 16 and I got injured in my back and couldn't play tennis. I had something called spondylolisthesis. The muscles around my back were weak and couldn't support my spine. One of the discs cracked. After that, I had to sit out for months. My rehab was strengthening all the muscles in my core and back and then staying still for hours. I was bored, so I went to the store and picked up a deck of cards. I couldn't walk or play tennis so I needed a hobby and I learned how to throw cards and do slight of hand.I decided to launch my own company and make my own decks. I found some designers and made it happen."