As Tony Stewart weighs whether to return to the track in the Sprint Cup Series at Michigan International Speedway, Stewart-Haas Racing said there is no timetable on a decision.
"The decision to compete in this weekend's NASCAR Sprint Cup Series event at Michigan will be Tony's, and he will have as much time as he needs to make that decision," SHR director of communications Mike Arning said in an email to USA TODAY Sports.
"It is still an emotional time for all involved, Tony included. He is grieving, and grief doesn't have a timetable."
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Arning confirmed Stewart had canceled a planned sprint car event for Saturday in Indiana, and any racing beyond NASCAR "won't resume until further notice."
SHR competition director Greg Zipadelli addressed the news media Sunday morning at Watkins Glen International, announcing Regan Smith would replace Stewart for the race.
Ward was killed Saturday night after being struck by a sprint car driven by Stewart at Canandaigua Motorsports Park.