With the game tied at 72-72 with 0:28 remaining, Maryville (14-3) took its only lead of the second half (73-72) on the second of two made free throws by Monte Calloway.
Sewanee re-gained the lead for good on Rowland's heroics 17.5 seconds later.
Maryville's Bradley Golden missed a potential game-winning 3-pointer with four seconds remaining.
With the victory, Sewanee (5-10) snapped an eight-game losing streak and ended Maryville's six-game win streak.
Sewanee was led by Joey Garcia with 19 points (16 in the second half), including five, 3s.
Maryville was led by Bradley Blair with a game-high 20 points. Calloway had a double-double with 16 points and 10 rebounds.
Sewanee led at halftime, 47-42.
Sewanee's largest lead in the game was 12, twice. The last time at 66-54 at 10:09. Maryville went on an 18-6 run to tie the score at 72-72 on Calloway's first of two made free throws.
FG%: Sewanee, 44.4% to 44.3%
Rebounds: Maryville, 46-30
FT%: Maryville, 12-15 (80.0%) to 10-14 (71.4%)
Records: Sewanee (5-10) Maryville (14-3)
Next Game: Sat. Jan. 21 - Sewanee at Centre College (Danville, Ky.)
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