SERENGUETI (14) is building towards his maiden success, the latest effort a solid third over 1600m at San Isidro, beaten 1.3 lengths. This looks a sterner test than last time but on his best form he is right in contention. TABARNELLO (4) finished second, beaten 0.8 lengths, when resuming from a spell last start over 1600m at this track. Meets some better types this time but a big run is on the cards. ATOMIC JOHN (8) is close to breaking through following a narrow defeat last time over 2000m at La Plata. Mariano Gabriel Rey has registered two minor placings when on board. Sure to be competitive. ONSITE (9) finished third last start over 1800m at this track, beaten 3 lengths. Likely improver with winning claims.