Primarily an outfielder and third baseman, Kennelly spent a significant portion of his career also as a catcher.
Kennelly signed to the Philadelphia Phillies in 2005 as a third baseman through the Major League Baseball Australian Academy Program where he had a good debut season with the GCL Phillies batting .295 and slugging .420.
Back in America, Kennelly had a break-out year, being promoted to the Reading Phillies, and batted .256/.338/.393 and named as the DH for the Florida State League postseason All-Star team.
His efforts were recognised by being selected on the roster for the 2009 Baseball World Cup for the Australia.
[5] Kennelly is a keen supporter of Australian Rules Football, which he had to give up playing to chase his dream of professional baseball.