The Risers struggled to 73-6 off their 10 overs after winning the toss and electing to bat.
Captain and former West Indies pacer Krishmar Santokie (2-7 off two overs) and left-arm spinner Errol Thomas (2-19 off two overs) were the best bowlers for the Titans as only Delbert Gayle (23), Ricardo McIntosh (15) and current West Indies pacer Sheldon Cottrell (10 not out) were able to reach double figures for the Risers.
Wayne Davis (17), Brian Clarke (15) and Jamaica Scorpions all-rounder Jamie Merchant (15) then ensured the Titans successfully chased the target, reaching 74-6 off 9.4 overs.
Akim Fraser (2-10 off two overs) and Gordon Bryan (2-22 off two overs) tried their best for the Risers who finished with six points from 10 matches and will play in the fifth-place playoff on Wednesday.
The Titans moved into fourth with nine points from 10 matches and will either be in the third-place playoff or fifth-place playoff based on the results of Tuesday’s matches.
After the Royals won the toss and decided to bowl first, they had the Titans in a tough spot on 29-3 off 5.1 overs before all-rounder Jamie Merchant rescued the innings brilliantly with a 15-ball 41 including five fours and three sixes.
He was dismissed in the ninth over to leave the score 84-4 before Nicholson Gordon bagged a hat-trick in the last over with the wickets of Errol Thomas (17), Sherdon Allen (2) and Jamaine Morgan (0).
Opener Wayne Davis earlier contributed 18 for the Titans.
Gordon finished with 3-21 off his two overs while off-spinner Peat Salmon contributed 2-5 from his two.
The Royals then cruised to their target, getting to 98-1 off 8.3 overs despite a short rain delay during the fourth over of their reply.
Lugg combined with West Indies batsman Nkrumah Bonner to form a match-winning second wicket partnership of 96 after fellow opener Romaine Morris was dismissed in the first over for a duck by former West Indies pacer Krishmar Santokie.
Lugg finished 50 not out off just 24 balls including four fours and three sixes, his second half-century of the tournament, while Bonner ended up 46 not out off 25 balls including two fours and four sixes.
