Both premiership winners had been below their best to start the year, with Jetta in particular well down on his scintillating 45-goal 2012 campaign.
But his trademark gallops down the wing, with a forlorn opponent trailing in his wake, were back on display in the Swans' 10-goal victory over the Brisbane Lions at the SCG.
Jetta, who turned 24 on Saturday, felt he hadn't been finding the ball in the right spots early in the new season, leading to a change in attitude.
But 21 possessions, six inside 50s, four tackles and two goals – plus seven running bounces – were a sight for sore Swans fans' eyes.
"It was good just getting back to my best and having some run and carry and delivering the ball to our forward line," he said.
"As long as I'm putting myself in the right spots, that's what I'll keep doing.
"I just felt I wasn't getting used and I wasn't getting the ball, so I think I got a little tiny bit lazy.
"But I had to get back to that two-way running and providing the boys with an option out there, which I did today."
Reid, 21, also showed some very encouraging signs, particularly in the first quarter as the Swans built a match-winning 40-point lead.
Back running freely and securing the marks that had been spilling from his usually-vice like hands earlier this year, Reid managed five marks and two goals in the opening term.
He would finish with 14 disposals and three goals, six days out from the Swans' first clash against the Hawks since last year's premiership triumph.
"I was pleased with the contribution of almost everyone. Everyone played a really strong role," coach John Longmire said afterwards.
"Some of the blokes that have maybe been struggling a bit got a bit of the ball and played really well.
"Sam's first quarter was outstanding. To move around as well as he was, he really looked dangerous in our front half.
"And I thought Lewis Jetta, the longer the game went, the better he was looking."
The match also signalled the debut of 2010 first-round draft pick Jed Lamb, who was introduced as a substitute early in the final term.
It was an agonising wait for the 20-year-old, who managed seven touches and two marks to prove to Longmire he can handle the step up in intensity – for a quarter at least.
"It was amazing. I was keen to get on, sitting on the bench for so long," Lamb said.
"Once I got out there I was fine. I just wanted to get a touch early and I was lucky enough to do that."
James Dampney is a reporter for AFL.com.au. Follow him on Twitter: @AFL_JD