The Broncos finished with 612 strokes to beat runner-up Farmingdale by one.
Partridge won the individual title by three strokes over Farmingdale's Adam Larkin.
Delhi's Greg Stavrou contributed rounds of 77 and 76, and Chris Braim followed an opening-round 80 with a 76 Sunday.
Dylan Walsh-MacGregor had rounds of 78-79 for the Broncos, who have won all three tournaments they've entered this spring.
Delhi will play in the NAIA AII Regional Tournament, which runs April 29-30 at Victoria Country Club in Texas.
Stevens 8, Hartwick 1
Peter Dumas earned his second singles victory of the season Sunday, but Hartwick dropped an Empire 8 match to visiting Stevens Institute of Technology (11-7, 5-0).
Dumas beat Tyler Tisdale, 2-6, 7-6 (4), 10-7, at first singles for the Hawks (0-7, 0-4).
The Hawks host a non-conference match against Oneonta State on Thursday.
TCNJ 9, O-State 0
Oneonta State's Michael Kennelly pushed Marc Nichols to a second-set tiebreaker at first singles before falling, 6-1, 7-6 (5) on Saturday, when the Red Dragons were swept by 13-0 The College of New Jersey in a non-conference match.
The Red Dragons (6-13) host Union College on Wednesday.
Delhi loses twice
Delhi fell, 6-3, on the road to Adirondack Community College on Saturday and lost, 9-0, at home to Nassau CC on Sunday.
Against Adirondack, Sean O'Connell and Derick Mara earned singles victories for Delhi, then teamed for doubles win.
The Broncos failed to win a set in their loss to Nassau.
Delhi (4-4) travels to Mohawk Valley today.
TRACK AND FIELD
Cobleskill's men finished with five New York State College Track Conference qualifying efforts and one program record during Saturday's All-American Invite at East Stroudsburg State University.
C.J. Sousis placed third in the 3,000-meter run in a program-record time of 9:06.26.
Namib Harris finished eighth in the triple jump, hitting an NYSCTC automatic qualifying mark at 43-0.5. The Fighting Tigers received NYSCTC provisional qualifying marks from Josh Miller (sixth in the 1,500, 4:13); T.J. Moade (800, 2:01.81); Taylor Drake (100, 11.98); and Justin Contestabile (110 hurdles, 17.59).