Tony Stewart's NASCAR status unknown: 'Grief doesn't have a timetable'

Tony Stewart's status has not been determined for Sunday's NASCAR Sprint Cup race at Michigan International Speedway, according to Stewart-Haas Racing.

"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," said SHR spokesmen Mike Arning in an email to SB Nation. "It is still an emotional time for all involved, Tony included. He is grieving, and grief doesn't have a timetable."

Arning also acknowledged Stewart has curtailed his "extracurricular racing plans," which included withdrawing from a sprint car race Saturday night at Plymouth (Ind.) Speedway.

"Tony did have some (plans) for this weekend, but those have been canceled and won't resume until further notice," the statement read.

Stewart's availability is in question following the death of Kevin Ward Jr., who passed away when a sprint car driven by Stewart struck Ward last Saturday at Canandaigua (N.Y.) Motorsports Park.

Stewart sat out Sunday's race at Watkins Glen International. Regan Smith filled in for Stewart, finishing 37th.