Los Angeles Chargers head coach Jim Harbaugh briefly exited the sideline during Sunday's game.
Just prior to kickoff of the Chargers' matchup against the Denver Broncos, the 60-year-old Harbaugh went into the medical tent before making his way to the locker room.
The Chargers soon announced that Harbaugh was questionable to return due to an illness, with defensive coordinator Jesse Minter taking over head coaching duties in his absence.
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Harbaugh returned to the sideline later in the first quarter. He later told a CBS sideline reporter he was dealing with a heart arrhythmia.
Harbaugh is in his first season as Chargers head coach, with the team off to a 2-2 start. The former Michigan Wolverines head coach, who led his alma mater to a national championship in January, also coached the San Francisco 49ers for four seasons from 2011 to 2014.
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