Popular defender Baker put Grays ahead six minutes before half-time only for Tony Jacobs to reply before the break. Baker did it again after 56 minutes but once again Dockers hit back with a 71st-minute penalty by Aaron Waters after keeper Lamar Johnson brought down Jack Carlile.
Hammond’s deflected shot from a tight angle put Grays ahead to stay in the 77th minute and he struck again with a near-post header two minutes later.
Heybridge moved up to fourth place with a 2-1 home win over Potters Bar. Luke Callander, the league’s top scorer, needed less than a minute to net his 27th of the season and veteran defender Chris Moore added another before the interval. Josh Hutchinson’s reply seven minutes from the end gave the hosts a scare, but no more than that.
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