Greg Zipadelli

Gregory C. Zipadelli, nicknamed "Zippy", is an American crew chief and team executive in NASCAR. Since 2025, he has worked for Rette Jones Racing as the team's Vice President of Business Operations. Zipadelli is most notable for being the crew chief of the No. 20 car for Joe Gibbs Racing drivers Tony Stewart and Joey Logano from 1999 to 2011. He won 34 races and two championships as a crew chief and the competition director at Stewart–Haas Racing from 2012 until the team's closure in 2024.