Troy Thompson also scored 11 points and J.D. Wallace added seven to go with 14 rebounds for PVAMU (10-16, 7-5 Southwestern Athletic Conference).
The teams combined to miss the first 13 field-goal attempts in overtime, and finished 1 of 14. Hamilton opened the scoring in the extra period when he hit two free throws with 3:19 to play and it was scoreless until he made two more foul shots with 31 seconds left. Hamilton and Jones combined to make 3 of 4 free throws to make it 63-56 with 10 seconds remaining before a dunk by JSU's Paris Collins capped the scoring.
Collins had 18 points on 8-of-24 shooting for the Tigers (10-16, 7-6). Treshawn Bolden scored 16, including three 3-pointers, and Jeremiah Bozeman added 10 points. Bolden made 6 of 6 from the field and Bozeman hit 4 of 5.
The teams, who came in tied for first in the conference in 3-point percentage (35.1), combined to make 10 of 52 (19.2 percent) from beyond the arc and committed 40 total turnovers.
Jackson State has lost three in a row and six of its last seven.
Texas junior guard Andrew Jones is a limited participant in practice as he continues to regain strength following his diagnosis of leukemia, coach Shaka Smart said Monday.
Four-star point guard Jalen Gaffney made a verbal commitment to UConn on Monday, giving the Huskies their second ESPN 100 guard in the past two weeks.
Watts is one of the most dynamic scoring guards in the country and looks to develop his game under coach Tom Izzo's tutelage.