"Alexander contributing the way he did was huge," quarterback Austen Arnaud said. "He is carrying the load for the offense right now."
Coach Paul Rhoads said Robinson's night was the product of a solid game plan and execution with a tremendous amount of physicality.
"This offense is still in its infantile stage but he and the others are really starting to get it," Rhoads said. "We really grew up as a football team tonight."
Iowa State led only 17-10 at the half until the Cyclones asserted their size and physicality on their first drive of the second. The seven-play, 73-yard march featured five carries by Robinson, which put him over 100 yards for the third straight game, and was capped by a 13-yard Arnaud touchdown run.
"That drive was extremely key because our defense had taken their foot off the gas a little bit," Rhoads said. "That drive gave us some confidence and created some big separation."
Army (2-2) drove down deep into Cyclone territory on the ensuing series but missed a chip shot 27-yard field goal. Mahoney missed a 41-yarder on the next Iowa State series, though, and despite the fact that both teams moved the ball well; it was still 24-10.
Iowa State could have put the nail in the coffin on that series but forced a punt and got the ball with a short field at its own 43. The Cyclones promptly put the game away by going right down the field and making it 31-10 on a 32-yard pass from Arnaud to Robinson again.
"We didn't step on their throat last week (against Kent State)," Arnaud said. "We did a great job of finishing tonight."
Army scored first, going 67 yards in 12 plays, but Iowa State kept the ball out of the end zone and held the Black Knight to a 32-yard field goal by Alex Carlton. Iowa State tied the game on its next series, however, when Mahoney hit his second 50-yard field goal of the season.
An exchange of multiple punts ensued until the Cyclones turned the field when Josh Lenz returned a punt 44 yards to the Army 18. Four Arnaud runs got Iowa State to the two and what was originally thought to be a running play turned out to be shovel pass from Arnaud to Robinson for the score to make it 10-3.
Robinson then ripped off his longest run of his career, a yard longer than the 67-yard run he had against Nebraska last season.
"Our offensive line did an outstanding job of sustaining blocks tonight including that play," Rhoads said.
Arnaud managed the game well and made the big throws when he needed to, completing 11 of 20 passes for 175 yards and two touchdown passes to Robinson, while running for one as well. Iowa State only had 60 more yards than Army but field position and the 201 yards the Cyclones gobbled up on the ground made a big difference.
Iowa State's offense did sputter at times, and senior punter Mike Brandtner kept that field position game in favor of the Cyclones. Brandtner had an outstanding night punting the ball five times for over a 47-yard average, including a 64-yarder and buried four inside the Army 20.
"Switching the field with punting and tackling well was big in this game with facing such a unique offense," cornerback Kennard Banks said. "The field position advantage really helped."