Carroll is a 207 cm right side/opposite who has been a key member of the Australian National Men's Team (the Volleyroos) since his debut in 2005 at the age of 19.

[1] Carroll was a three-time All-American first-team selection at Pepperdine University and was named the National Player of the Year by the AVCA and Volleyball Magazine in 2009.

He helped lead Berlin Recycling Volleys to six league championships in Germany in a seven-year span.

He reached the CEV Champions League Final Four twice, and won a bronze medal in 2015.

After retiring, Carroll was appointed as the Pepperdine Waves' associate head coach.