Sijomon led his KCA Royals to title in the inaugural edition of the KCA President's Cup T20 tournament.
Kerala rode on the consistent performances of senior players Sachin Baby, pacer S Sreesanth and outstation professionals Robin Uthappa and Jalaj Saxena to progress from a tough group.
Chasing a target of 149, Kerala romped home in just 8.5 overs.
This was Kerala's second victory on the trot in Elite Group C.
Kerala were 233/4 in 38.2 overs when rain ended play and were declared winners by VJD method against Odisha in Elite Group C.
Sreesanth thanked the fans for their support and assured that he will work hard in a video posted on Instagram.
Sreesanth, who returned to competitive cricket in last month’s Syed Mushtaq Ali Trophy after serving a seven-year ban for his alleged involvement in the 2013 IPL spot-fixing scam, had a base price of Rs 75 lakh in the preliminary list.
Pacer S Sreesanth is also part of the 20-member team.
Young Kerala opener Mohammed Azharuddeen, who smashed a 37-ball 100 against Mumbai in the Mushtaq Ali Trophy, is also in the fray.
Pacer Basil Thampi has opted out citing personal emergency.