http://www.tsn.ca/blogs/tim_chisholm/?id=419702

Not sure what to title this thread. Remember training camp?

In retrospect it's funny how we all interpreted Dwane Casey's hedging on the topic of Lowry's status last summer. Everyone assumed last summer that when Casey insisted that Lowry would have to earn the starting spot over Calderon that he was merely being respectful of his veteran leader. The refrain carried into training camp, though, and by the time Kyle Lowry returned from injury in January, he had been officially supplanted in the starting five by Calderon.
I also think the Raptors beat guys know more about this than they are letting on...

Rumours of discord between Casey and Lowry ran hot in early 2013, so much so that there was talk that the Raptors might actually be willing to trade Lowry, despite the excitement that greeted him upon his arrival. In the end, Casey may not have been trying to pay respect to Calderon but rather cast his lot with Team Jose from the very start.
On his ineffectiveness....

While Lowry's penchant for wild passes and turnovers helped lead to his game being restricted by his coach, the pendulum has now swung so far the other way that Lowry is now left looking no more effective as a lead guard than decidedly second-rate options like Jeff Teague or Brandon Jennings – and far from his advertised role of Point Guard of the Future.