Hamilton’s first Ferrari win in Barcelona closed the gap to 41 points behind Mercedes’ championship leader Kimi Antonelli.
Rory McIlroy was in a larger group on one under but would have been higher had he not bogeyed his final two holes.
Pollock played an influential role in Northampton reaching Saturday’s Gallagher Prem final against Exeter.
The England captain was in County Championship action after being stood down for the second Test against New Zealand.
But post-race drama made connections wait to be confirmed the winner.