Franklin & Marshall College picked up a 57-54 win over Swarthmore on Saturday to give Robinson the milestone victory in his 1,229th game as the Diplomats' coach.
Robinson became the Division III leader in wins in February 2004. He has spent 45 years leading the Franklin & Marshall program, tallying 26 20-win seasons in that span.
Franklin & Marshall has made five Final Four appearances in the Division III tournament under Robinson, reaching the title game in 1991.
The 17th-ranked Diplomats are 10-2 this season and undefeated in Centennial Conference play.