Malaysian apprentice jockey Zawari Razali has always been coy about talking up his premiership chances, but a Sunday race-to-race double that brought him within a win of tying up with leader Wong Chin Chuen finally gave a hint of a slightly more can-do response.

The Stephen Gray trained Bayu broke through for a deserved maiden win last start and appears well placed to go back-to-back in the final event at Singapore this evening.

Consistent performer Star Genius appears well placed to return to the winner's stall when due to contest the fifth event at Kranji this evening.

Star Genius redeemed herself from her luckless last outing with a sizzling turn of foot that saw her claim the $75,000 Novice race over 1200m on Monday.

After a subdued start to the season, Singapore champion trainer Mark Walker looks to have finally hit top gear as he extended his recently newfound lead with an early race-to-race double in the first two races on Sunday.