NASCAR America at 6 p.m. ET: Joe Gibbs Racing’s Darlington success, Elliott Sadler interview

Today’s episode of NASCAR America is the last preview of this weekend at Darlington Raceway before cars get on the track Saturday. The episodes airs from 6 – 7 p.m. ET on NBCSN.

Dave Briggs hosts with Brian Vickers in Stamford, Connecticut. Steve Letarte joins them from Burton’s Garage

On today’s show:

· We’ve focused on the Chase bubble drivers entering the Southern 500, but today we’ll weigh the chances of those farther back in the Chase standings to figure out who’s capable of a season-saving win.

· All four Joe Gibbs Racing drivers have won at Darlington in the past. After a so-so weekend in Michigan, can JGR get back to their winning ways at the Lady in Black?

· Xfinity Series veteran Elliott Sadler calls into the show to talk about his chances this weekend at Darlington – and his special throwback with a connection to NASCAR on NBC’s Dale Jarrett.

· In our Social Pit Stop, Dale Earnhardt Jr. tweets about meeting a 90-year old fan, Matt Kenseth throws out the first pitch at a Phillies game, and Kyle Larson hands out school supplies to local students in Darlington, South Carolina.

If you’re not near a TV, you can watch online or on the NBC Sports app at the NASCAR stream on NBC Sports. If you plan to stream the show on your laptop or portable device, be sure to have your username and password from your cable/satellite/telco provider handy so your subscription can be verified.

Once you enter that information, you’ll have access to the stream.

Brett Moffitt making first NASCAR start of year subbing for Matt Tifft in Truck race

Brett Moffitt, the 2015 Sprint Cup rookie of the year, will drive Red Horse Racing’s No. 11 truck for Matt Tifft in Thursday night’s Camping World Truck Series race at Kentucky Speedway.

Tifft is out indefinitely as he recovers from brain surgery July 1 to remove a low-grade tumor. Moffitt, who hasn’t competed in a NASCAR race since the 2015 Sprint Cup finale at Homestead-Miami Speedway, will be driving in his third Truck race but his first since 2013.

“Obviously, we’re thinking of Matt and can’t wait for him to return, so we’re sending him our best wishes and we hope to see him back at the track soon,” said Moffitt in a press release. “I hate that it’s under these circumstances, but I’m really grateful for this opportunity with Red Horse Racing and I hope it can lead to more.”

Tifft was replaced by German Quiroga two weeks ago at Iowa Speedway.

Moffitt, 23, earned the Sprint Cup Rookie of the Year honor last season after making 31 starts for Michael Waltrip Racing and Front Row Motorsports as a substitute driver for Brian Vickers and David Ragan.

Moffitt’s best finish in those 31 races was eighth at Atlanta Motor Speedway. The native of Grimes, Iowa, made the first of his two 2013 Truck starts at Kentucky Speedway driving for ThorSport Racing. He started 34th and finished 14th.