So against Grizzlies, the NBA's own last two minute report says that Grizzlies got away with two loose ball fouls that were not given.
The first one was at the last 30sec mark, where Tony Allen grabs the arm of Ingram chasing the rebound, and there was no call. If the refs called that, Ingram would have shot 2 FTs with 30 second to go.
The second missed call was again a loose ball situation where Deng tries to get into position on Clarkson's miss, but Marc Gasol fouls him. Again if the refs called it, Deng would have shot 2 FTs.
This is the official report. Sometimes I wonder how Luke maintains his calmness in these situations, not that this occurs just in the late game but some of them were ridiculous.