The Terps' star freshman will join the Colorado Rapids. It's the third straight year a Maryland player was selected in the top five.
The Terps hope five new additions up top can replace last year's goalscoring production, a majority of which was lost to players leaving the program.
St. Martin became the second Terp to be selected in the 2022 MLS SuperDraft, being picked 50th overall.
Bender was selected by Charlotte FC, becoming the third Terp to be selected first overall.
The Terps were highlighted by young talent this season, but come tournament play, they folded under the pressure.
The Terps struggled to take advantage of early opportunities and paid the price, giving up the game-winner in the final moments of their loss to Long Island in the NCAA tournament.
St. Martin won the national championship in 2018 with the Terps, and he's looking to do so once more as the NCAA tournament gets underway Thursday.
The Terps will meet the Sharks on Thursday at Ludwig Field, with a chance to play Saint Louis in the second round on the line.
The Terps failed to convert a penalty in regular time and proceeded to lose the penalty shootout 3-2, falling out of the conference tourney.
The Terps will square off with Northwestern on Sunday in the first of three possible conference tourney matches.