“We’re on the verge of some sibling rivalry,” – Stefanos Tsitsipas jests about the potential for brothers Petros and Pavlos to stir up competition within the family’s doubles aspirations.

Petros and Pavlos (Credits: NYTimes.com)

Stefanos Tsitsipas playfully teased about an impending “fight” between himself and his brothers Petros and Pavlos as they contemplated their doubles pairings for upcoming tournaments. The 25-year-old Greek star first teamed up with Petros at…