Manly enforcer Steve Matai could face up to four weeks on the sidelines after being placed on report for two dangerous tackles in his side's 19-12 NRL defeat by Parramatta on Monday.

The New Zealand centre was hit with a grade five charge by the NRL judiciary on Tuesday, for a savage first-half high shot on young Eels debutant playmaker Tom Humble.

Matai was sanctioned again midway through the second half for another high shot on Parramatta fullback Jarryd Hayne, which led to a grade one charge.

The 26-year-old was fortunate to not find himself in the sin bin after he refused to walk towards referee Jared Maxwell following the incident, after being penalised for the challenge as the Eels edged their way to a first win at Brookvale since 2004.

Matai will miss two matches if he takes the early guilty plea for the Humble incident, and will not miss any further action should he do the same for the Hayne offence.

However, should he choose to fight both charges at a judiciary hearing at the NRL headquarters on Thursday night and lose, he will be sidelined until the Sea Eagles - who have a bye this weekend - play Penrith in round 16.

Matai has until midday (AEST) on Wednesday to respond to the charges.

Melbourne prop Jeff Lima has copped a one-game suspension after pleading guilty to a dangerous throw on Canberra's Travis Waddell in the Storm's 17-6 victory on Saturday.

The New Zealand front-rower will miss his side's round-12 clash with Canterbury with the Storm having a bye this weekend.

Cronulla's Issac Gordon also took an early guilty plea, but avoids a ban, for dangerous use of the feet against Penrith's Michael Jennings during the Sharks' 34-14 defeat on Sunday.

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