Five days after Cotchin announced he was calling it quits, Riewoldt on Tuesday told his Richmond teammates he would be retiring.
Ranked third for most goals in the club's history with 786 after leading the Tigers' goal-kicking in 11 of his 17 seasons, Riewoldt will end a career that started in 2007.
Richmond's final home game for the season is on Saturday against North Melbourne at the MCG, where Riewoldt and Cotchin will be given an emotional send-off in front of the Tigers faithful.
The 34-year-old had been considering playing on next year after kicking 31 goals in an up-and-down season for Richmond.
Just as they were for Cotchin, all Richmond players and staff were in attendance at Punt Rd for Riewoldt's retirement press conference.
"It's probably been bubbling away for most of the year myself," Riewoldt said of his retirement decision.
"Myself and Trent had a conversation at the start of the year about really enjoying every moment this year.
"It's probably a little bit of an end of an era.Â
"It only seems like yesterday I was sitting on the porch of his (Cotchin's) parents holiday house in Moama (in regional NSW) having a couple of VBs with his old man and just having the time of our lives at 19 years of age."
Riewoldt said he found it difficult letting friends and family know, but called Damien Hardwick, who exited the club in May, on Monday night to thank his long-time coach for helping him during his career.
Hardwick is due to return from an European holiday this week and could be in attendance at the MCG on Saturday ahead of being announced as Gold Coast's new coach.
Riewoldt was expecting to play a support role for Tom Lynch this year, but the towering Tigers forward has not featured since hurting his foot in round four.
A three-time Coleman medallist, Riewoldt, with 346 appearances, will bow out having played the second-most games at Richmond behind Tigers legend Kevin Bartlett (403).
Riewoldt was a standout in his early years, even when the Tigers struggled, and continued to thrive when Richmond started playing finals consistently.
A noted big-game player, Riewoldt booted nine goals across Richmond's three grand final victories in 2017, 2019 and 2020.
After the Tigers broke through for their first premiership in 37 years in 2017, Riewoldt famously got on stage with US indie rockers The Killers and belted out the band's iconic song Mr Brightside while still wearing his jumper from the grand final.
"I've got no doubt that we'll probably get a fair few renditions on social media over the next period of time," Riewoldt said of his rockstar cameo.
"It's probably one of the things that will stick with me for the rest of my life."
Richmond, who will almost certainly miss finals unless a string of unlikely results fall their way, will meet Port Adelaide at Adelaide Oval in round 24 in their first outing post-Riewoldt and Cotchin.
