Roush Fenway Racing will not field a team in the Xfinity Series for the first time in more than a quarter century, RFR President Steve Newmark confirmed Wednesday night on SiriusXM NASCAR Radio.

Roush Fenway Racing first ran in the Xfinity Series in 1992 with Mark Martin, who won once in 14 starts that year. The organization has won a record 138 Xfinity races. Roush Fenway Racing also has captured five Xfinity driver titles — Greg Biffle in 2002, Carl Edwards in 2007, Ricky Stenhouse Jr. in 2011-12 and Chris Buescher in 2015.

Newmark told Claire B. Lang on SiriusXM’s “Dialed In” that the focus is on strengthening the Cup program with Stenhouse and Ryan Newman, who joins the team to drive the No. 6 car this season.

“We’re going to focus exclusively on both of those Cup teams (in 2019) and realized we needed to allocate all of our resources there,” Newmark told SiriusXM NASCAR Radio. “We’ve fluctuated on the number of the teams in the Xfinity Series and a lot of that has been based on need. We’ve been four, we’ve been one, and I think (2019) we’ve decided on how we’re positioned we’ll step out of that for a year and see how that goes and just focus all the resources, all the engineering, all the wind tunnel on making sure that we perform to our expectations at the Cup level.”

Asked if sponsorship was a key factor in the decision, Newmark said: “There’s no doubt that sponsorship plays a factor in everything that we do. For better or worse that’s the way NASCAR is structured right now and sponsorship is the lifeblood for the teams. My hope is that at some point in time we continue to evolve to a model that moves a little bit way from that. But that was just a factor. We had a great run with Lilly Diabetes, five full seasons, we handled the Ford driver development program last year and the Xfinity Series is something that Jack (Roush) has always been passionate about.

“But when we look at where we are and what we needed to focus on, we just felt like that all the resources should be dedicated to Cup. We’ve always used Xfinity as a feeder series … for Cup, and when we look at our drivers, we’ve got those guys locked up and we think that they’re going to be with us for a number of years. We look at the engineering talent, we look at our crew chiefs, and we kind of felt like we had all the pieces of the puzzle in place and so really what we need to do is go out and execute at the Cup level and we’ll see where we end up in Xfinity in the future.”

Last season, Roush Fenway Racing fielded two full-time Xfinity teams: Ryan Reed in the No. 16 and Chase Briscoe, Austin Cindric and Ty Majeski splitting time in the No. 60 car as Ford development drivers. Reed finished 11th in the points.