He now wants to finish off the year on a high, with a round win and securing second in the championship set as goals for Newcastle.
"Congrats to Bryce, he deserved the championship and he's already won it, but it would be nice to secure that runner-up position,” said Randle, who Holdsworth has openly said is deserving of a top-tier drive.
Discussing his 2020 options, Randle added: "I'd like to think with the Sandown podium, that will bolster my hopes for next year in the main game, but there's a lot of people applying for seats.
"I was saying to everyone that if I wasn't a co-driver, that would probably have been one of the worst weekends of my life in terms of racing.
"To get it on the podium in my fourth ever Supercars round, was pretty spectacular and it was great to do it with Lee, he's a great guy and we had a lot of fun this enduro campaign.
"If someone would've told me that we were going to finish third in the PIRTEK Enduro Cup and third in the Sandown 500, I would've told them that they're dreaming."
The 2019 Dunlop Super2 Series finale takes place this weekend as part of the Coates Hire Newcastle 500.