An MRI performed on Buffalo Bills running back Fred Jackson showed nothing conclusive following a knee injury during the Bills' 48-28 loss against the New York Jets on Sunday, ESPN's Adam Schefter reports. However, it will be seven to 10 days before the team has a timetable for Jackson's return, meaning that he's at the very least out for Sunday's game against the Kansas City Chiefs.
Schefter said that doctors will ask Jackson to rest for now, then will see if his knee has responded.
Jackson was initially diagnosed with a sprained lateral collateral ligament. He was injured Sunday on a hit by Jets safety LaRon Landry at the end of a 7-yard run. Jackson was able to walk after the injury but eventually headed to the locker room.
C.J. Spiller took over for Jackson and rushed for 169 yards and a touchdown on just 14 attempts against New York. He caught two passes for 25 yards with one fumble.
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