The 2015 IndyCar season will forever be overshadowed by the loss of Justin Wilson, in a tragic accident that rocked the series and re-opened a long-running debate on driver safety.
After Pocono, though, came Sonoma - a championship finale that yielded an unlikely champion - and, as AUTOSPORT's IndyCar correspondent Mark Glendenning explains, a surprise number one in his yearly driver ratings.
1 GRAHAM RAHAL
Team Rahal Letterman Lanigan Racing
Starts 16
Wins 2
Position 4th
The Indy 500 poleman who didn't live to raceday 6pm, May 11, 1996: Scott Brayton takes pole for the Indianapolis 500. 12:17pm, May 17, 1996: Scott Brayton dies in a practice crash. MARK GLENDENNING shares his story IndyCar
Fast Failures: American heartbreak at the Indianapolis 500 A real American hero was lost from the history books within sight of the finish of the 1967 Indianapolis 500. MARK GLENDENNING revisits the infamous STP turbine Indycar IndyCar
F1 and Haas are wrong to ignore America Alexander Rossi ended an eight-year Formula 1 exile for American drivers last month, but it seems he has been overlooked for a seat by the new Haas team. MARK GLENDENNING looks at why US drivers should be taken more seriously F1
IndyCar's secret manufacturer war Chevrolet subjugated Honda in the first year of IndyCar's aero-kit contest. The season might be over, but the battle has moved off-track and into a political row, as MARK GLENDENNING explains IndyCar
How a Maranello favourite went out on a high Gerhard Berger's talent warranted more than just 10 grand prix wins, reckons NIGEL ROEBUCK, but he was a class act up until his final race F1
How Berlin's FE finale unveiled DS Techeetah's new rivals With both Formula E titles wrapped up, there wasn't a great deal to play for in the final two Berlin E-Prixs. But with both DS Techeetahs well down the grid, the two races at the Tempelhof Airport allowed two potential challengers to take the limelight FE
Why F1 may get another Mercedes/Red Bull showdown in Spain Attention is fixed on Red Bull after its stunning Silverstone win. The question now is whether it can repeat that result in Spain, where it seems three factors will be critical. Here's why those show another possible Mercedes upset is on at this stage F1
Is the real Dovizioso back after Austria MotoGP practice? Andrea Dovizioso's MotoGP season has so far been tough to swallow. But returning to Ducati's stronghold of the Red Bull Ring for the Austrian Grand Prix appears - at least after Friday's interrupted practice - to have found Dovizioso back at the front MotoGP
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