The Warriors won the toss and chose to field first, a decision which looked like the wrong one at the halfway stage of the game.
Former West Indies Under-19 representative Tristan Coleman was in destructive form for the Titans with a rapid 23 off just 10 balls including three sixes.
Cameos from Oshane Walters (20), Wayne Davis (18) and Jamaica Scorpions all-rounder Jamie Merchant (16) helped the Titans post a formidable 106-6 off their 10 overs.
Mikheil Silver (3-11 off two overs) and Andre McCarthy (2-21 off two overs) were the best bowlers for the Warriors.
Cornwall then got contributions from all their batsmen to eventually overhaul the Titans' total on the very last ball of the match reaching 107-4 off 10 overs.
Ockeeno Farquharson (29), Andre McCarthy (23) and Kerry Holness (17) were the main contributors while Jamaica Scorpions batsman Paul Palmer Jr and Captain Damion Ebanks chipped in with 13 and 13 not out, respectively.
Merchant took 2-21 off his two overs for the Titans.
The Risers took first strike after the Titans won the toss and elected to field first.
Delbert Gayle (35), Ricardo McIntosh (27) and captain Chadwick Walton (22) did the bulk of the scoring to help the Risers post 106-5 off their 10 overs.
Brian Buchanan (2-23 off two overs) and Errol Thomas (2-15 off two overs) were the best bowlers for the Titans.
In the Titans' turn at the crease, contributions from Sherdon Allen (33), Wayne Davis (22) and Albert Gopie (20) were not enough as they fell agonizingly short of the Risers total, finishing 102-6 off their 10 overs.
Fraser, who has 24 wickets in five first-class matches for the Jamaica Scorpions and West Indies A, was the pick of the bowlers with 3-24 from his two overs, including two wickets in the final over when the Titans needed 13 runs for victory.
He got the wicket of Jamie Merchant (2) off the second ball of the over before a six from Oshane Walters off the penultimate ball of the innings meant the Titans needed five runs from the last ball.
Fraser then dismissed Walters (8) off that final ball to seal the Risers’ second win of the tournament.
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.
The day started with the Kings losing to the Middlesex United Stars in a super over.
The United Stars win the toss and elected to field first, restricting the Kings, albeit with a number of changes to their team, to 85-7 off their 10 overs with Kenroy Williams (22) and Xavier Burton (17) being the main scorers.
Tyrone Daley was the pick of the bowlers for the United Stars with 2-14 from his two overs.
Top scores of 38 not out from captain and West Indies opener John Campbell and 21 from Jamaica Scorpions all-rounder Alwyn Williams then allowed the United Stars to match the Kings total reaching 85-6 off 10 overs.
The same pair along with Daley then combined to post 13-1 in the super over before Ojay Shields restricted the Kings pair of Jeavor Royal and Brad Barnes to eight without loss to secure the win.
The Surrey Royals got the better of the Cornwall Warriors in the second match of the day by nine wickets.
The Royals restricted the Warriors to 86-6 off their 10 overs after winning the toss and choosing to field first.
Captain Damian Ebanks (25), Damion Bryce (21 not out) and Kerry Holness (18) were the main contributors for the Warriors against an excellent 2-8 off two overs from Jamaica Scorpions pacer Nicholson Gordon.
The Royals then successfully got to 87-1 off 8.1 overs thanks to 61 not out off 29 balls from wicketkeeper/batsman Romaine Morris.
With the league stage now completed, Wednesday will see the Cornwall Warriors and the Surrey Risers contest the fifth-place playoff, while the third-place playoff will be an all-Middlesex affair with the Titans taking on the United Stars before a champion is crowned on Thursday when the Surrey Royals and the Surrey Kings battle it out.
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.
The Titans batted first and posted a respectable 101-7 off their 10 overs after the Royals won the toss and chose to field.
Sherdon Allen (25) and Tristan Coleman (19) were the main contributors against a solid all-round bowling effort from the Royals.
The Royals only used five bowlers with Khari Campbell (2-14) and Ryan Francis (2-10) being the two best.
102 proved to be not enough for the Titans to defend against a powerful Royals batting line-up as Surrey needed only 8.3 overs to get to 107-3 and secure a seven-wicket victory.
Jamaica Scorpions wicketkeeper/batsman Romaine Morris (38) and opener Leroy Lugg (31) were the main contributors for the Royals.
West Indies batsman Nkrumah Bonner made 17 and Royals skipper Javelle Glen saw his team get their fifth win in eight matches with 12 not out.
