Player stats against each opponent club
| Team | MP | W | D | L | G | A | ||
|---|---|---|---|---|---|---|---|---|
 Rapid Bucuresti | 5 | 1 | 2 | 2 | 0 | 0 | 1 | 0 |
 Universitatea Cluj | 4 | 1 | 0 | 3 | 1 | 0 | 0 | 0 |
 Csikszereda | 4 | 3 | 1 | 0 | 0 | 0 | 1 | 0 |
 Metaloglobus | 4 | 3 | 1 | 0 | 2 | 1 | 1 | 0 |
 Dinamo Bucureşti | 3 | 1 | 2 | 0 | 0 | 0 | 0 | 0 |
 CFR Cluj | 3 | 2 | 0 | 1 | 1 | 0 | 0 | 0 |
 Unirea Slobozia | 3 | 1 | 1 | 1 | 0 | 0 | 0 | 0 |
 Universitatea Craiova | 3 | 1 | 0 | 2 | 0 | 0 | 0 | 0 |
 Otelul | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 0 |
 Botoşani | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 FCSB | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Mioveni | 2 | 1 | 0 | 1 | 0 | 0 | 0 | 0 |
 UTA Arad | 2 | 0 | 1 | 1 | 0 | 0 | 0 | 0 |
 Argeş | 2 | 0 | 1 | 1 | 0 | 0 | 1 | 0 |
 Şcolar Reşiţa | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 Hermannstadt | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 |
 Petrolul 52 | 2 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
 OFK Pirin | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
 Lokomotiv Plovdiv | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
 CSKA Sofia | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
Rober Sierra plays as a midfielder for Argeş. Throughout his career, Rober Sierra has scored 7 goals and provided 2 assists in 225 appearances across 6 clubs. Among the clubs he has represented — Argeş, CSA Steaua Bucureşti, Spartak Varna, Inter Turku — Rober Sierra was most prolific at Argeş, where he scored 3 goals in 32 appearances. Rober Sierra stands 181 cm tall, weighs 73 kg.
