After a busy weekend of racing, Phil and Josh return for E309 of the GSP to cover IndyCar, NASCAR, F1, and more! Alex Palou continues his greatness with another win at Barber in the NTT IndyCar Series, while Graham Rahal got his first podium in three years. The guys go over the race and other key players as the drivers and teams get a welcome rest before Long Beach.

Dennis Hamlin dominated another race at Martinsville, but William Clyde Elliott ended up getting Hendrick Motorsports and Chevy their first win of the 2026 Cup Series season at the paperclip. Other stories included Darrell Wallace, Jr., and Carson Hocevar's incident and other drivers' struggles as they take the week off for Easter. The O'Reilly Series race was carnage-filled, but Justin Allgaier's momentum continues with another win. Lee Pulliam made an emotional debut and had a chance to win the race for JRM.

Andrea Kimi Antonelli became the youngest driver ever to lead the Formula 1 World Championship after winning a second consecutive race at the Japanese Grand Prix. McLaren finally showed up with Oscar Piastri, while Ferrari saw their usual ups and downs with Lewis Hamilton losing a podium but Charles Leclerc picking up the pieces. With a month off between this race and Miami, the guys look at who goes in with and without momentum.

The GSP Roundup reviews Indy NXT, MotoGP/Moto2, Supercross, World Superbikes, and Super Formula before Phil and Josh come back to make picks for Trucks and O'Reilly (possibly Cleetus McFarland) at The Rock. Josh lets us know all things going on in iRacing in the Sim Segment before Show Close. Like, comment, and subscribe!

Coming off Throwback/Alumni weekend for NASCAR at Darlington, Phil and Josh are here to discuss all three races at the track Too Tough To Tame. Tyler Reddick had to overcome multiple issues and the speed of Brad Keselowski to win his fourth race out of six to start the 2026 Cup Series season. The guys go over how he did so, other players and the points heading to Martinsville.

Justin Allgaier utilized a poor final pit stop by Kyle Larson's crew and a strong restart to win his second race of the season in the O'Reilly Series and add to his points lead. Corey Heim used new tires and overtime restarts to make it back to the front for his first Truck Series win of 2026, while teammate and replacement Kayden Honeycutt dominated. Phil and Josh do their reviews, provide their takes and give updates leading into Martinsville and Rockingham respectively.

A busy GSP Roundup covers IMSA at Sebring, NHRA, MotoGP/Moto2, Formula E, Supercross, World Superbike and Indy NXT before the guys come back together to make their picks for the Formula 1 Japanese Grand Prix, IndyCar at Barber and NASCAR Cup/O'Reilly at Martinsville. Josh lets us know all things going on in iRacing on the Sim Segment and Phil mentions his participation in a sim race at G-Force Racing Lounge before the usual social media updates.

Episode 307 of the Grip Strip Podcast discusses the latest results and key players in recent motorsport events across IndyCar, NASCAR, and Formula 1, while highlighting upcoming races.

• IndyCar at Arlington: Kyle Kirkwood wins; podium finishes by Alex Palou and Will Power.
• NASCAR Cup Series: Denny Hamlin takes the win; notable drivers include Bell, Byron, and Larson.
• NASCAR O'Reilly Series: Kyle Larson wins over Chase Briscoe; other notables include Allgaier, Gray, and Mayer.
• Formula 1 Chinese Grand Prix: Winner was AKA; Russell and Hamilton on the podium, with ongoing issues for Verstappen, among others.
• GSP Roundup includes highlights from WRC Rally Kenya, Indy NXT, IMSA 12 Hours of Sebring, NHRA, MotoGP/Moto2, and Formula E.
• Phil and Josh make their picks for the Darlington NASCAR Tripleheader before Josh's Sim Segment.