Kyle Singler’s cold shooting remains a cause of concern for Duke.

Singler shot 5-of-12 against Michigan on Sunday as the Blue Devils narrowly escaped with a 73-71 win to advance to the Elite Eight.

Since February, Singler, a 6-8 forward, hasn’t been hitting his shots regularly.

Sunday was just Singler’s fourth game with an offensive rating above 100 (the D-I average) in the last month and his sixth since Feb. 2.

Singler hasn’t made more than one 3-pointer in a game since Feb. 13 and didn’t make any in six of those 12 games since. Unless he’s a threat from outside, defenders can slack off and collapse the middle, making it tougher for Duke to have dribble-penetration.