This week's guest tipster on Zero Tackle is former Manly prop George Rose, who was a fan favourite during his eight-year career at the Sea Eagles.
Rose played 129 matches for the club between 2006-13, and also had stints with the Roosters, Storm and Dragons during his 154-game NRL career.
The 2011 premiership player can now be seen on NITV on Tuesday night's at 8.30pm, as he is one of the hosts of Over the Black Dot.
You can follow Rose on Twitter at @gorgeousgrose.
Here are Rose's tips for Round 13!
Sea Eagles v Cowboys
"I'm going to have to go the Cowboys for this one. They've still got JT playing, I feel bad going against Manly, but I think the face that they have got Dylan Walker out and have lost both Trbojevic's, I think they've got too many injuries and too many unavailable at the moment.
Tip: Cowboys by 8
Rabbitohs v Sharks
"I'm going to go Cronulla. They've still got a host of stars available for them even though it's Origin period, and there's too many out for the Rabbitohs, way too many. I think Andrew Fifita is going to have a cracking game, and I'm backing the Sharks.
Tip: Sharks by 14
Eels v Knights
"I reckon the Eels, I'm backing Bevan French to score four tries, and a big win to the Eels.
Tip: Eels by 20
Roosters v Wests Tigers
"I'll have to go the Tigers there, they're reasonably unaffected [by Origin] this week compared to the Roosters, and I think the Tigers have been playing unreal footy.
Tip: Tigers by 10