Yishun Sentek Mariners

In 2016, then Yakob Hashim, the coach of Yishun Sentek Mariners, had expressed his unhappiness at the lack of financial support the semi-professional leagues received.

The 2017 season will be sponsored by Ajinomoto Pte Ltd, making it the 1st season which is to be sponsored by a Japanese Company.

On 12 November 2017, a mass street-like brawl broke out during a their match against Singapore Armed Forces Sports Association (SAFSA). The incident happened in time added on in the second half when Zulfadhli Suzliman was sent off with SAFSA leading 3–2. The match was streamed “live” over the FAS social-media channel. The contentious free-for-all, which apparently started in the closing stages of the match, was shown to a regional audience, without viewer-censorship with SAFSA and Yishun Sentek players fighting with unstoppable punches and flying-kicks. Yishun Sentek coach, Yakob Hashim said to Straits Time that Zulfadhli told him that Nazirul Islam (from SAFSA) verbally abused his mother and he retaliated with a kick, which led to his red card. Coach Yakob also said that he was paying attention to the both of them when another scuffle involving the reserves broke out at another corner of the pitch. The three FAS match-officials were hapless as the skirmish went about uncontrollably for about 15 minutes as a former Security Branch police officer, immediately alerted the police.

The quick arrival of police lowered rising post-match tempers among players and team officials and eye-witnesses said the lawmen were still at the stadium at 11pm on Sunday night.

On 30 January 2018, the club have been fined S$5,000 and hit with a five-point penalty by the Football Association of Singapore. The club could also face further sanctions, an additional S$5,000 fine and five-point penalty if they get into any more disciplinary problems. Eight Yishun players were also handed fines of between S$300 to S$1,000, and suspensions ranging from 4 to 15 months. Of the three SAFSA players charged by the disciplinary committee, two were fined S$300 and suspended for four months, while one only received a warning.

On 6 December 2017, Yishun Sentek Mariners were crowned Singapore Football League Division One champions at Jalan Besar Stadium. They secure their title after the match against Katong FC, where a walkover was awarded to Yishun Sentek Mariners with a score of 3–0. Zul Fesha also finished up as the League top goalscorer.

On 18 November 2018, Yishun Sentek Mariners beat Tiong Bahru FC 3–1 to clinch the 2018 Singapore FA Cup title in the process. 2018 Singapore Football League Division One top goalscorer, Zulkiffli Hassim added to his tally in the FA Cup to secure the win for his club and the distinction of being the joint-top scorer for the 2018 Singapore FA Cup.