Kent Bazemore added 14 points as the Monarchs (27-6) won their ninth game in a row -- and the league's automatic NCAA tournament berth, likely depriving the CAA of its first three-team contingent in the field of 68.
Regular season champion George Mason is expected to receive an at-large invitation.
The Rams (23-11) trailed by 18 in the second half but got within 55-54 with 4:26 left before the Monarchs scored on consecutive possessions, rebuilding the lead to five, and hung on.
Bradford Burgess led Virginia Commonwealth with 19 points. Jamie Skeen had 18.
SOUTHERN CONFERENCE CHAMPIONSHIP
WOFFORD 77, COLLEGE OF CHARLESTON 67
In Chattanooga, Tenn., Cameron Rundles scored 21 points, sending Wofford to a second consecutive NCAA tournament berth with a victory over College of Charleston.
Wofford (21-12) lost both regular season games to the Cougars, but the Terriers won their eighth game in a row in part because they were perfect at the free throw line until the final minute, hitting their first 20 shots.
Charleston (24-10) missed its first NCAA berth since 1999 and coach Bobby Cremins' first since he last took Georgia Tech to the NCAA regional semifinals in 1996.
Noah Dahlman added 20 points for Wofford. Jamar Diggs added 17.
Andrew Goudelock, the nation's fourth-leading scorer, topped his average with 25 points for Charleston.
METRO ATLANTIC CONFERENCE CHAMPIONSHIP
ST. PETER'S 62, IONA 57
In Brideport, Conn., Jeron Belin scored 17 points as St. Peter's beat Iona to secure the school's first NCAA tournament berth in 16 years.
Nick Leon added 15 points for the fourth-seeded Peacocks (20-13), who upset top seed Fairfield 62-48 Sunday.
Michael Glover had 23 points for Iona, which came in averaging almost 80 points a game. Scott Machado added 15 and Rashon Dwight added 10.
The Gaels trailed by as many as 12 in the second half before mounting a furious late comeback that fell short.
Iona's 57 points were a season low, two below the 59 they had in a two-point loss to Rider in January.
St. Peter's last won the conference tournament in 1995.