Dallas Mavericks superstar Dirk Nowitzki led his team to a championship berth in 2006. Things didn't go the Mavericks' way after taking a 2-0 series lead against the Heat, but Nowitzki has matured and emerged yet again to lead his team to another Finals berth. Can Tony Romo take the Cowboys on a similar path? The quarterback has shown signs and did give the Cowboys their first playoff win in a decade in 2009 before watching his 2010 season get cut short by injury. Romo appears to be taking on a bigger leadership role by organizing teammates for practices, but can he get the Cowboys to the level Dirk has taken the Mavericks? Calvin Watkins looks at the quarterback's development and answers your questions in his latest Cowboys mailbag.