Those are the adjectives on the resumes of Cargo and CSU in 2020 as the Wallerawang Landscaping Cup league tag juggernauts have made it through three rounds of play without losing and without conceding a point.

But on Saturday at Cargo Oval, one 0 must go.

The two sides are set to square off in round four of the Mid-west rugby league competition in a battle for outright first position on the premiership table.

The Heelers are fresh off an 82-0 belting of the Lithgow Bears, while the Mungals celebrated a 54-0 victory over Orange United under lights at Carrington Park.

Heelers' lock Eb Watson is well aware of the significance of Saturday's meeting but admittedly has limited knowledge on who or what to look out for.

"I've heard a bit about them and I know they're a good side," Watson

"We're excited to have a good, hard game and see if we can stack up against them... hopefully we're good enough to beat them."

It's always good coming into a big game after your offence fires on all cylinders in the previous week and Watson attributed round three's dominant display to pushing up in attack.

"We were really hitting the ball on the advantage line whereas they [Lithgow] were passing it a few metres behind," she said.

"We scored a lot of breakaway tries... some of the girls on our team have amazing hipwork at the line and a lot of them did their own thing."

After a 2-0 start, you'd think Cargo's objective would be to give the premiership a shake up but some silverware is the side's secondary focus this winter.

"Our main goal coming into the year was to keep our team together so we could go in 2021," she said.

"We worried that if we did have this break, people might go off and play another sport. Most of our core girls stayed and hopefully they'll be back in 2021.

"It would be good to win it, though," she said.

CSU coach Phil Tuilau is under no illusion as to how challenging the upcoming clash will be and said he's had his eye on it since before the season started.

"At the release of the draw, we kind of knew this was the game we'd have to work up to," Tuilau said.

"We've used the first two rounds to work on our structure and keep practising but made sure they knew we'd have to come up against a tougher team.

"There's not going to be a line break in every set and if we miss one tag, we'll have to pay for it."

The 2019 premiership-winning coach understands the importance of a fun, family-oriented vibe throughout the winter but still has his eyes on the trophy - especially for those who haven't lifted it yet.

"There's a lot of girls in the club who have played for CSU but have never won it... they've always been in Oscar's [Thorburn] team," he said.

"Players like Caitlin Treble and other really talented girls have always fallen at the final hurdle. I want to take them to their first premiership."

Whether it be CSU Blue or Yellow, the students have won the premiership every season since the competition's inception.

As for Cargo, the Heelers claimed back-to-back Woodbridge Cup premierships in 2018-19 and if they wish do the same in the Mid-west tournament this winter, will want to be winning on Saturday.

Cargo Oval is the destination for a 1.30pm league tag kick-off before the men's sides clash at 2.45pm.