Johnston was selected by New York City FC in the first round, Rindov was selected by Sporting Kansas City in the second round and Hunter George was selected by San Jose Earthquakes in the third round.
The Terps couldn't overcome a two-goal deficit and hit two crossbars on potential game-tying shots late in the match.
The Terps' regular season title is their first since 2016.
The Terps failed to equalize in the second half against the Panthers.
The victory sends the Terps three points clear at the top of the Big Ten table.
The Terps opened up conference play with a win over the Wolverines.
The Terps put six goals past Virginia Monday, the most since they've scored in the past decade.
The Terps ousted the Cavaliers for the second straight season, this time in dominant fashion.
Sasho Cirovski slides key players through the Terps' lineup to great effect.
The Terps' win over New Hampshire spurred the climb into the top-ten.