PORT Adelaide recruit Steven Motlop spoke to his older brother, and former Power player Daniel, about what to expect in Showdowns.

But kicking the match-winning goal in Saturday night's clash against Adelaide at Adelaide Oval with 21 seconds on the clock and endearing himself to the Power faithful wasn't in the ex-Geelong star's wildest dreams.

"I've kicked a couple late for Geelong, but it's up there with one of the best goals I've ever kicked," Steven Motlop told AFL.com.au.

FULL MATCH DETAILS: All the stats and stories from Power v Crows

"I was talking about it with my brother early in the week, because he's played in a few.

"He just said how big the games were.

"He's actually at a wedding, so I'm not sure if he's seen it, so I'll have to check my phone.

"Hopefully he's seen it."

TALKING POINTS: Gray grabs Showdown by scruff of the neck

Daniel Motlop played 83 games for the Power between 2006-11.

That family connection with the club was a major reason why Steven turned down other suitors to sign a four-year deal with the Power as a free agent.

The Power looked like they were home leading by 17 points, before quick goals from Eddie Betts, Taylor Walker and Mitch McGovern put the Crows back in front with less than a minute on the clock.

WATCH: The frenetic last two minutes

Motlop was in the right place at the right time, getting a pass from Sam Gray, stepping off his left foot, running inside 50 and slotting the ball between the big sticks, celebrating with his arms wide open.

"Sometimes the serotonin just takes over I think and you do silly things when you kick goals," Motlop said.

"I sort of worked to the contest and Sammy Gray was really clean and picked it up and dished to me.

"I missed a few early on tonight so I'm glad I got one in the end.

"What a first Showdown."

Motlop has played in some big games during his 135 appearances for the Cats from 2009 to 2017.

"To win another one like that, you've got to sit back and realise how lucky you are as a footy player and just enjoy the moments where you win, because you lose a few games and it makes you really appreciate it," he said.