Indy Lights
Matheus Leist has triumphed in the Iowa 100, setting up his victory with a huge charge following a Lap 26 Caution period.
Leist sat eighth when Garth Rickards spun on Lap 22, before the race restarted on Lap 26.
He needed less than seven laps to pick off all of those in front of him, rounding up leader Colton Herta on Lap 32.
The Carlin driver then disappeared, his lead peaking over six seconds before Leist managed the margin home for his third win in four races.
Santiago Urrutia finished runner-up after wresting second position Dalton Kellett in a no-holds-barred that saw the two twice make side-to-side contact.
Kellett rounded out the podium.
Kyle Kaiser holds a reduced points lead over Leist after fading from second to fifth over the course of the 100-lap race.
Indy Lights now moves to the Toronto streets for a double-header across July 14-16.
USF2000 Championship
Oliver Askew has extended his championship lead with a lights-to-flag victory in Iowa.
The Cape Motorsports driver qualified on pole and got a clean getaway, eventually taking a 3.8s victory over his nearest championship rival Rinus VeeKay.
The next event is Toronto, with two races from July 14-16.
World Superbikes Championship
Chaz Davies has taken victory in his first race since fracturing a vertebra when he was run over at Misano three weeks earlier.
Davies ran between pole-sitter Tom Sykes and Jonathan Rea as the three cleared out in the Saturday race at Laguna Seca.
The Aruba.it Ducati rider passed Sykes into the Corkscrew on Lap 12 of 25, allowing Rea to follow him through at the Rainey Curve.
Davies had to then hold out Rea in the laps which followed before establishing a buffer that he would take to the finish, with Sykes behind his Kawasaki Racing Team team-mate in third.
Rea won Race 2 from eighth on the grid, having stormed to second, behind Sykes, on the opening lap alone.
He passed Sykes on Lap 3 and went on to take a 2.8s win, with Davies picking up another podium behind the factory Kawasakis.
Rea's championship lead over Sykes is 59 points, the equivalent of more than two race wins (25 points each), ahead of Round 9 of 13 at Germany's Lausitzring on August 18-20.
Championship leader Charles Leclerc led every lap of the Feature Race in Austria but failed to finish the Sprint Race, which was won by Artem Markelov.
Leclerc got the jump from pole position and pitted on Lap 31 of 40, the Monegasque retaining his advantage when he resumed racing.
Nicholas Latifi demoted Leclerc's Prema Racing team-mate Antonio Fuoco from a long-time second position to third on the penultimate lap.
Starting the Sprint Race from position one, Markelov led all 28 laps, surviving both a Safety Car and Virtual Safety Car period.
The latter came as a result of Leclerc, who was unlucky to run into Fuoco as the Italian attempted to regroup following an attempted pass of Oliver Rowland.
The contact took Leclerc out of contention, but he still holds a sizeable 49-point lead over Rowland heading to Round 6 of 11 at Silverstone on July 13-16.
GP3 Series
Round 2 in Austria saw two first-time victories.
In Race 1, Briton George Russell beat compatriot and ART team-mate Jack Aitken to the first corner and would not lose the lead.
South African Raoul Hyman led every lap of Race 2, getting the start and running far enough in front of second-placed Giuliano Alesi to go unchallenged in the 18-lap journey.
After a pair of third places, Nirei Fukuzumi takes the series lead to Round 3 at Silverstone on July 13-16.
British Formula 3
Ben Hingeley won the opening race at Spa before Enaam Ahmed took out Races 2 and 3.
In Race 1, Toby Sowery and Hingeley both slipstreamed past leader Ahmed on Lap 1, before Hingeley made an aggressive move past Sowery at the Bus Stop on Lap 3.
Ahmed, who finished second in Race 1, drove from seventh on the grid to take out Race 2.
He led the field away in Race 3 but had to re-pass Sowery late in the race after Sowery had slipstreamed past on Lap 2.
Ahmed now leads Sowery by 82 championship points with Event 6 of 8 to come at Brands Hatch on August 5-6.
IMSA WeatherTech SportsCar Championship
Eric Curran and Dane Cameron have taken victory in the seventh race of the WeatherTech SportsCar Championship season at Ontario.
Cameron had to stave off a fast-finishing Stephen Simpson in the rain to take victory in the #31 Whelen Engineering Cadillac DPi.
The Taylor brothers, who had won the first five races of the season, looked on for another until Ricky Taylor had a coming-together with a GT Le Mans class runner with 21 minutes remaining and eventually made the finish in seventh.
Ryan Briscoe and Richard Westbrook finished third in GT Le Mans class and 11th outright in their #67 Chip Ganassi Ford GT.
Kenny Habul and Tristan Vautier were 13th in GT Daytona class and 30th outright in the #75 SunEnergy1 Mercedes AMG GT.
The next race is at Lime Rock Park on July 21-22.
Red Bull Global Rallycross
Scott Speed won the Indianapolis Final, while Chris Atkinson finished ninth.
Round 8 is at Atlantic City on August 12.