The victory for Dhofar meant it set a new record of points earned in a season since the 14-team top-flight league was introduced in 2012-13 season.
Dhofar collected a massive 66 points after it recorded its 20th win of the season against Sohar.
The previous highest points earned was achieved by Al Suwaiq last season when it collected 63 points with 20 wins but three draws and three defeats.
Dhofar, which had sealed the domestic league title with five rounds to spare, drew the other six games to become the first team ever to stay unbeaten in the league.
It was a dominating performance from Dhofar, which won its 11th league title, another record, with Fanja, the second best with nine titles.
Adding more sparkle to the shining performance was the club's striker Odai Khader winning the top-scorer's award with 14 goals.
The attack-oriented Dhofar team pumped in a total of 57 goals in 26 games and the defence stood firm as the club conceded just 11 goals. The goal-difference was a whopping 46 clearly underlining the team's allround superiority.
In fact, the season belonged to Salalah clubs as Dhofar's arch-rival, Al Nasr, claimed the runner-up place with a 2-1 win over Oman at the Seeb Sports Stadium on Tuesday, when all the 14 clubs featured in identical kick-off games.
The victory helped Al Nasr finish with 50 points, seven more than third-placed Al Nahda, which lost 0-2 to Al Rustaq.
Al Nasr was the second-best in scoring goals with 40 to its credit but let in 23 goals.
Last-season's winner Al Suwaiq ended fourth with a 3-1 win over relegated Majees.
In the other matches, Sur held Al Shabab 2-2 in a game between two-relegated teams, Saham was a 2-1 winner over Muscat and Mirbat held Al Arouba 3-3.
Final round results: Sur 2 Al Shabab 2, Saham 2 Muscat 1, Oman 1 Al Nasr 2, Mirbat 3 Al Arouba 3, Al Rustaq 2 Al Nahda 0, Majees 1 Al Suwaiq 3, Sohar 0 Dhofar 2.
Final standings: 1 Dhofar (66 points), 2 Al Nasr (50), 3 Al Nahda (43), 4 Al Suwaiq (41), 5 Al Rustaq (40), 6 Saham (38), 7 Sohar (37), 8 Al Arouba (36), 9 Muscat (30), 10 Mirbat (30), 11 Oman (27), 12 Al Shabab (24), 13 Sur (20), 14 Majees (17).