| Kessi | |
| Full Name: | Kessi Isac dos Santos |
| Birth Date: | 26 October 1994 |
| Birth Place: | Arapiraca, Brazil |
| Height: | 1.86 m |
| Position: | Midfielder |
| Currentclub: | Southern |
| Clubnumber: | 6 |
| Youthyears1: | 2002–2013 |
| Youthclubs1: | ASA |
| Youthyears2: | 2013 |
| Youthclubs2: | → Vitória (loan) |
| Years1: | 2013–2018 |
| Clubs1: | ASA |
| Caps1: | 26 |
| Goals1: | 2 |
| Years2: | 2014 |
| Clubs2: | → Penedense (loan) |
| Caps2: | 5 |
| Goals2: | 1 |
| Years3: | 2014 |
| Clubs3: | → União Palmeirense (loan) |
| Caps3: | 0 |
| Goals3: | 0 |
| Years4: | 2017 |
| Clubs4: | → Lagarto (loan) |
| Caps4: | 7 |
| Goals4: | 1 |
| Years5: | 2018 |
| Clubs5: | Rio Branco |
| Caps5: | 9 |
| Goals5: | 2 |
| Years6: | 2018–2020 |
| Clubs6: | Yuen Long |
| Caps6: | 25 |
| Goals6: | 1 |
| Years7: | 2020–2021 |
| Clubs7: | Pegasus |
| Caps7: | 16 |
| Goals7: | 1 |
| Years8: | 2021–2022 |
| Caps8: | 8 |
| Goals8: | 0 |
| Years9: | 2022– |
| Clubs9: | Southern |
| Caps9: | 16 |
| Goals9: | 0 |
| Club-Update: | 7 May 2023 |
Matheus Isac dos Santos (born 26 October 1994), commonly known as Mateuinho, is a Brazilian professional footballer who currently plays as a midfielder for Hong Kong Premier League club Southern.
On 3 August 2022, Kessi joined Southern.
| Club | Season | National League | National Cup | League Cup | Other | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| ASA | 2013 | Série B | 1 | 0 | 0 | 0 | 1[2] | 0 | 0 | 0 | 2 | 0 | |
| 2014 | Série C | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 2015 | 0 | 0 | 0 | 0 | 0 | 0 | 2[3] | 0 | 2 | 0 | |||
| 2016 | 4 | 0 | 1[4] | 0 | 0 | 0 | 12 | 2 | 17 | 2 | |||
| 2017 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 0 | |||
| Total | 10 | 0 | 1 | 0 | 1 | 0 | 14 | 2 | 26 | 2 | |||
| Penedense (loan) | 2014 | – | 0 | 0 | 0 | 0 | 5 | 1 | 5 | 1 | |||
| Lagarto (loan) | 2017 | 0 | 0 | 0 | 0 | 7[5] | 1 | 7 | 1 | ||||
| Rio Branco | 2018 | 0 | 0 | 0 | 0 | 9[6] | 2 | 9 | 2 | ||||
| Yuen Long | 2018–19 | Hong Kong Premier League | 16 | 1 | 3[7] | 1 | 6[8] | 0 | 1[9] | 0 | 26 | 2 | |
| Career total | 26 | 1 | 4 | 1 | 7 | 0 | 36 | 6 | 73 | 8 | |||