Services hastily arranged the social six-team event after the Plymouth Combination Sevens was postponed due to a shortage of referees.
Sixteen teams had been due to take part in the annual Combination competition, but that will now be held in August instead.
The Fiji B team ended up with 12 points to take the overall win. Devonport C and Fiji A came joint second with nine points, Saltash were fourth with six points and the Medics and Devonport A came joint fifth with three points.
Devonport Services’ head coach Mike Lewis said it was a good day.
“Everyone chipped in when teams were short of a player or two and every game was played in the spirit you would expect.
“Every team also won a few games which always helps the enjoyment levels.”
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