Pedro himself is also fast but feels that the four quickest players in Conte's side are Charly Musonda, N'Golo Kante, Willian and summer signing Zappacosta.
"I don't know because we have many fast players. Maybe Charly Musonda, Willian, Zappacosta, Kante is always ruining a lot he never stops," he told Soccer AM.
"These guys are the four fastest."
Pressed on who would win if that quartet were to race over 100m, Pedro added: "Probably Zappacosta."
The Blues will play in the Premier League on Saturday against struggling West Ham at the London Stadium.