Rule changes allow coaches chance at second challenge

(Photo credit: Mark J. Rebilas-USA TODAY Sports)
NBA coaches who have wanted the ability to challenge a second officiating call in games will be able to do so next season -- as long as they are successful with their first one.

The rule change was one of two announced by the league's Board of Governors on Tuesday.

The other wrinkle targets players who attempt to draw offensive foul calls by "flopping" -- falling to the f