Harrison suffered a season-ending knee injury against Penn State on Sept. 27.
He will miss the remainder of the season.
"When he went down twice in a season, we said, ‘This is happening for a reason.’”
Bin notched four goals and three assists in 2018.
The sophomore had five touchdowns in a breakout freshman campaign.
Robinson was set to become a key contributor as a sophomore in 2017. But a week before the season, those dreams came crashing down.