DeMar DeRozan had a pretty good rookie year, averaging 8.6 points and 2.9 rebounds while shooting 49.8% from the floor in 77 games.

With Toronto headed for a rebuilding period without Chris Bosh -- despite what general manager Bryan Colangelo says -- DeRozan figures to be one of the team's top options this coming season.

If there was one glaring hole in DeRozan?s game last season, it was his three-point shooting. He attempted just 16 treys all season because of his limited range, hitting only four of them.

This summer, he's focused on turning that negative into a positive

"Early in the morning I lift and then I go to the gym and make 300 threes," DeRozan told RealGM in Las Vegas. "I also work on my mid-range jumper."

He added that he?s been scrimmaging with guys like Brandon Jennings as well.

A number of DeRozan's fellow 2009 lottery picks opted against playing in Las Vegas -- Tyreke Evans, Stephen Curry and Brandon Jennings -- but he said playing on Toronto?s summer league team was a no-brainer.

"I want to improve and it?s better than sitting at home," said the California native, while adding that his presence was a mutual decision. "I get to be in the gym and get out there and play against other guys."

While it's true that he has often gone again inferior players in Las Vegas, DeRozan has dominated. Entering Saturday?s action, he was averaging 21.0 points and 4.5 rebounds on 58% shooting from the field.

Even more impressive?

His range looks much improved as he?s hitting 40% of his three-pointers.