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Nama Penuh: Jefferson Alexander Sierra Flores
Nama Baju: SIERRA
Posisi: M(T)
Penilaian: 78
Umur: 30 (May 13, 1993)
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Posisi pemain
Posisi: M(T)
Position Desc: Midfielder umum
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Sejarah Penilaian
Rekod Pemain
| Tarikh | Kelab | Penilaian |
| Mar 5, 2023 | Manta FC | 78 |
| Mar 22, 2022 | Deportivo Quito | 78 |
| May 19, 2021 | Cumbayá FC | 78 |
| Feb 8, 2021 | CD Olmedo | 78 |
| Mar 2, 2019 | CD Olmedo | 78 |
Manta FC Skuad
| # | Neg | Pemain | Pos | Umur | Nl | |
|---|---|---|---|---|---|---|
 | Roberto Valarezo | M(RT) | 32 | 77 | ||
| Jefferson Sierra | M(T) | 30 | 78 | ||
| 77 |  | Jeison Domínguez | D,DM,M(L) | 28 | 77 | |
 | Emiliano Agüero | M(T) | 29 | 78 | ||
 | Oscar Sainz | D(T) | 32 | 75 | ||
 | Ronaldo Johnson | D,DM,M(L),AM(RLT) | 29 | 77 | ||
| 25 |  | Juan Rojas | AM,F(RLT) | 31 | 78 | |
| César Batalla | D(LT) | 27 | 76 | ||
| Marcos Cangá | D,DM,M,AM,F(R) | 35 | 77 | ||
|  | AM,F(RL) | 22 | 73 | ||
| 19 | |  | DM,M(T) | 21 | 65 |