Winger Hosea Gear starred with three tries as a slick Junior All Blacks outfit beat disjointed Fiji 45-17 in the Pacific Nations Cup on Thursday.

The Junior All Blacks stepped up a gear in their seven-try-to-three victory, showing more cohesion than in their narrow 17-16 win over Samoa in their opening match at the weekend.

Fiji showed flashes of their characteristic free-running talents, but a high error rate meant they were unable to maintain possession and string phases together.

In the other second round match of the round-robin tournament on Thursday, in nearby Sigatoka, a late four-try surge clinched a 34-15 win for Samoa over Japan.

Gear's speed and power showed he is making a speedy return to form after an injury-interrupted season, which stalled his momentum following a strong showing for the All Blacks on their European tour late last year.

The Hurricanes winger scored the opening try seven minutes into the match after collecting a deft crossfield kick from flyhalf Stephen Brett and stepping around the sole defender to touch down.

Fiji hit back 10 minutes later with a converted try to halfback Nemia Kenatale, giving the home side a shortlived lead.

A minute later lock Tom Donelly hit back for the Juniors and further touchdowns to captain Tamati Ellison and outside centre Anthony Tuitavake stretched the lead to 24-7 at the break.

Gear added to his tally just two minutes into the second half, using his strength to touch down in the tackle.

Fiji needed only another three minutes to hit back with five points through No.8 Sakiusa Matadigo after centre Waisale Suka prised open the Juniors' defence.

The Juniors and Fiji traded more tries through Rene Ranger and Iliesa Keresini respectively, before Gear barged through three tackles to set the seal on a dominant performance.

In the other match, Japan led 15-12 midway through the second spell but Samoa's greater size and experience took their toll as they finished six-tries-to-two winners.

Japan, who dominated territory until well into the second half, were also partly undone by handling and tactical errors.

They were unable to turn their dominance of possession in the first spell into a lead, going into the break with Samoa 12-3 ahead.

Samoa's first half tries underlined the dominance of their pack, including a penalty try after 23 minutes when Japan illegally disrupted a drive towards the line from a five-metre scrum.

The Pacific islanders drove over for their second from an attacking lineout eight metres out, with prop Justin Va'a emerging from the back of the maul to score.

Japan hit back twice in the first 12 minutes of the second half through full back Jack Tarrant and winger Hirotoki Onozawa to take the lead briefly at 15-12.

But big Samoan winger Sailosi Tagicakibau broke through several tackles before outpacing the cover defence to restore his team's lead midway through the spell.

Hooker Mahonri Schwalger and replacements Esera Lauina and Semo Sititi all added tries in the final quarter as the Japanese challenge dissolved.

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