MELBOURNE coach Dean Bailey has given the experimental 'last touch' out-of-bounds rule a big thumbs down, saying it has no place in the game.

Bailey's damning assessment of the rule, which will be trialled throughout the NAB Cup, came after players from all three teams involved in Friday night's triple-header at AAMI Stadium struggled to adapt to the rule and its interpretation.

The rule penalises the last player to touch the ball before it crosses the boundary line, except if the last contact was deemed to have been part of a contest.

The Demons emerged victorious in both of their games against Adelaide and Port Adelaide, but that didn't stop Bailey from suggesting the rule should be scrapped.

"I'm not sure there's much I like about it...I don't like the rule," Bailey said after Melbourne's wins over the Crows and Power.

"I'd drop it straight away. You've had your experiment and I don't think it's a rule that's going to benefit either team or the game."

Melbourne overcame a slow start to beat an inaccurate Adelaide by 10 points in the first game and followed up with a nine-point win over Port Adelaide in the second game.

The Demons, who were without midfielder Tom Scully, defender James Frawley and forward Ricky Petterd among others, impressed in both games but Bailey was quick to play down his team's clean sweep.

"I didn't think there was too much in the two games. The Crows had a couple of set shots in front [of goal] and if they'd slotted them they could've easily won the game," Bailey said.

"We've won both games, which is good but I think it was a lot closer [than the results suggested]. It was a good hit-out for us. We played four straight quarters, which was probably good for us."

Young players Liam Jurrah, Jack Watts, Jack Grimes, Addam Maric, Neville Jetta and Stef Martin all showed promise across the two games and Bailey also singled out untried midfielder Sam Blease and rookie Michael Evans for praise.

Bailey said the wins would give the Demons confidence, but that the real test would come in the season proper.

"They're a pretty tight group of young men, who want to make something. They’re pretty happy about playing well tonight and winning the games is a bonus for them," he said.

"They’re pleased about playing well, but they want to be able to produce week in and week out and even over the next three games we've got before the season starts."

The wins send Melbourne straight through to the second round of the NAB Cup, while Adelaide and Port Adelaide will have to rely on other results to avoid relegation to the NAB Challenge.