Blackman's per game averages:
Catches- 9.3
Yards- 117
Against Iowa State:
Catches- 10
Yards- 99
Let's use an analogy here. If Kevin Durant (PPG avg: 28, FG%: 49.6) is held to 24 points on 53% shooting, was he "shut down" by the opposition? The answer is no. They played good defense on him, but he still dominated the game.
Did you really just try to use Durant as a comparison?? Each attempt is more feeble than the last but I think the this says it all. Anyone who watched the game knows this couldn't be further from the truth.