Workington edged out London Skolars 27-20 at Derwent Park.
The Skolars looked contentious and kept up with a Workington side who are strong contenders for promotion.
Petersen grabbed his second before Adebisi completed his hat trick with the Skolars only six points down.
However Carl Forber slicked over a drop goal to end any hopes of a shock result for the London side.
Oldham were too good for Barrow at the Whitebank Stadium.
They remain the only unbeaten side after defeating the Raiders 32-26 which should have been more for the home side.
Despite levelling the scores before half time at 18-all, Barrow never looked like threatening in the second half.
Barry Pugh got the ball rolling for Barrow after 11 minutes before Lucas Onyango crossed five mintes later.
However Danny Whitmore made sure the scores were level going into half time.
The second half was all Oldham as they scored tries from Jamie Dallimore, David Cookson and Miles Greenwood. Barrow replied with James Nixon and James Finch set up a nail-biting finale with his final try of the game.
Rochdale Hornets put 54 points past the Crusaders, who could only muster up 18 points in reply.
Despite the Crusaders going ahead after Kriss Wilkes’ try after four minutes, the Hornets never looked like losing this game.
The onslaught continued for the Crusaders as Rochdale added a further try from Chris Hough.
Tempers flared on both sides as Anthony Morrison and Gary Middlehurst were dismissed by referee Warren Turley for punching.
After the restart Wilkes grabbed his second try before Leather also scored his second of the game. John Cookson scored before Rochdale took their foot off the gas a little bit. This allowed Rob Massam and Danny Hulme to pull back the scores for Crusaders and inject some pride into the team.
However Rochdale had the final say with a Adam Bowman try with two minutes to go.
Gateshead remain winless despite earning a bonus point against Whitehaven, who won 30-18.
Robin Peers scored the first try after only three minutes catching Haven cold.
Doncaster started and finished strongly with the nucleus being a Tom Hodson hat trick.