Prolific Bathurst winner Bjorn Baker and accomplished local trainer Dean Mirfin have the form and numbers to dominate Saturday’s Tyers Park TAB meeting where heavy track form is the prerequisite.

Coffs Harbour gelding Plonka launches his quest towards a possible second tilt at the $500,000 Newhaven Park Country Championships Final at Randwick in April when he resumes over 1000m at Grafton on Sunday.