J.T. Marr and Adam Cecere were each recognized as Second Team selections.
Elliott played two years each at Clemson and Michigan State.
The matchup was first reported in April.
The Nittany Lions were originally scheduled to play at 7 p.m. on Tuesday.
Horwat picked up a win and a save in two relief appearances against the Terrapins to help Penn State secure a spot in the Big Ten Tournament.
The Nittany Lions will take on the Illini at 7 p.m. on Tuesday in Omaha, Nebraska.