Garner had handed the Pilgrims a third minute lead at the sun-drenched Jakemans Stadium although his effort was cancelled out by Sunderland's multi-million pound striker Danny Graham nine minutes after the break.
United bossed proceedings in terms of chances created, with former loanee Liam Agnew who indeed hit the bar for the Black Cats, twice denying Carl Piergianni on the line.
PIC: Tim Hoff.