A Tale of Two Halves: From Brazilian Journeyman to Hong Kong Stalwart
Kessi Isac dos Santos, the 30-year-old Brazilian midfielder also known as Mateuinho, embodies perseverance and adaptation. A specialist defensive midfielder defined by his physical presence, defensive discipline, and valuable versatility as a centre-back, his career has been a tale of two distinct halves. After struggling for stability in Brazil’s lower leagues, he moved to Asia and forged a new identity, establishing himself as a durable, respected, and trophy-winning professional in the Hong Kong Premier League, where he now anchors the midfield for Kowloon City.
The Story So Far
Kessi’s career is best understood as two separate acts: a formative, challenging period in his native Brazil, followed by a definitive and successful chapter in Hong Kong.
His footballing education was rooted in his hometown club, Agremiação Sportiva Arapiraquense (ASA). He spent over a decade in their youth system, from 2002 to 2013, before transitioning to the senior team for a debut in Brazil’s second tier, Série B. However, securing a permanent role proved elusive. Over the next five years, he amassed only 26 total appearances for his parent club, a period characterized by a series of loan moves to other lower-league clubs like Penedense and Lagarto as he searched for regular playing time. His time in Brazilian football concluded with a short spell at Rio Branco PR in 2018, after which he made the pivotal decision to move his career abroad.
In 2018, Kessi embarked on a new chapter, joining Yuen Long in the Hong Kong Premier League. This transfer marked a significant turning point. He spent two seasons with the club, successfully adapting to a new footballing environment and establishing himself as a capable professional. A move to fellow top-flight club Hong Kong Pegasus followed for the 2020–21 season.
After a brief return to Brazil in 2022, his most impactful and successful period to date began upon his return to Asia. He joined Southern District on August 3, 2022, and became a key figure over three seasons. He made over 50 appearances for the club, winning multiple team trophies and cementing his reputation in the league. On July 24, 2025, Kessi made his most recent move, joining Kowloon City on a free transfer. This transfer from one established Hong Kong club to another underscores the stability and recognition he has definitively achieved.
Style of Play & Tactical Analysis
Kessi is a defensively-minded player whose primary value lies in his discipline, physicality, and versatility. As a specialist defensive midfielder, his core responsibility is to provide a protective screen for the defensive line. He excels at disrupting opposition attacks through tackling and interceptions, asserting a physical dominance in the midfield battle. His height, around 1.84 m to 1.86 m, also makes him a capable presence in aerial duels.
He is not a creative playmaker but rather a ball-winner who can initiate attacking transitions from deeper positions. A crucial element of his tactical identity is his proven ability to also operate effectively as a centre-back. This versatility is a significant asset, offering his managers the tactical flexibility to change formations or cover for injuries and suspensions, and it highlights his strong defensive acumen.
While a spike in his goal-scoring (5 goals in the 2023/24 season) might suggest a change in role, this was a reflection of his reliability from the penalty spot, as he was documented as Southern’s designated taker. This demonstrates composure under pressure but is distinct from his open-play identity as a defensive anchor.
Future Outlook
Kessi’s move to Kowloon City in July 2025 has seen his integration into the team be immediate and total. He has been an ever-present figure in his new squad, playing 100% of the available minutes in the Hong Kong Premier League and starting every recorded match of the 2025/26 season as of October. This is not the pattern of a player being slowly introduced; it is the deployment of a trusted veteran signed to be a cornerstone of the team from the outset. His transfer was a strategic move by Kowloon City to acquire a player with extensive experience and a proven track record of success within the league. His near-term future is secure as a vital, senior leader for his new club.
The Trophy Case (Honours)
Team Honours
- Hong Kong Sapling Cup Winner (Southern District): 2022–23, 2024–25
- Copa do Nordeste Runner-up (ASA): 2013
Individual Honours
- Hong Kong Top Footballer Awards Nominee: 2024–25
The Record (Career Statistics)
| Season | Club | Country | Appearances | Goals |
| 2013 | ASA | Brazil | 2 | 0 |
| 2014 | ASA | Brazil | 0 | 0 |
| 2014 | Penedense (loan) | Brazil | 5 | 1 |
| 2014 | União Palmeirense (loan) | Brazil | 0 | 0 |
| 2015 | ASA | Brazil | 2 | 0 |
| 2016 | ASA | Brazil | 17 | 2 |
| 2017 | ASA | Brazil | 5 | 0 |
| 2017 | Lagarto (loan) | Brazil | 7 | 1 |
| 2018 | Rio Branco PR | Brazil | 9 | 2 |
| 2018–19 | Yuen Long | Hong Kong | 26 | 2 |
| 2019–20 | Yuen Long | Hong Kong | 9 | 0 |
| 2020–21 | Pegasus | Hong Kong | 16 | 1 |
| 2022 | Santa Maria-DF | Brazil | 8 | 0 |
| 2022–23 | Southern District | Hong Kong | 16 | 0 |
| 2023–24 | Southern District | Hong Kong | 18 | 5 |
| 2024–25 | Southern District | Hong Kong | 20 | 2 |