Cowboys coach Bill Parcells confirmed the injury Monday during his weekly news conference.
"An MRI showed it [the shoulder blade] was broken and that means
he'll probably be out about two months," Parcells said.
Jones, in his NFL debut, rushed for 16 yards on five carries in the first quarter
of the Cowboys' 19-12 win over Cleveland on Sunday. He was
inactive for the season opener due to bruised ribs.
Parcells said that he didn't know when Jones was injured, but that it was sometime during the game.
"I'm sad to lose the player, sorry for him," Parcells said.
Parcells said surgery was not likely. However, if Jones is
likely to be out more than half the season, the team may consider
putting him on injured reserve.
Richie Anderson was inactive against Cleveland
because of a knee problem, but Parcells expected him to return to
practice this week.
The Cowboys planned to split time in the backfield with Jones and George, who rushed for 62 yards and a touchdown on 18 carries Sunday. The injury to Jones should mean increased playing time for Lee, an unheralded reserve from Middle Tennessee State. Lee had 15 yards on four carries Sunday and 35 yards and a touchdown on five carries in the opener.
Information from The Associated Press and SportsTicker was used in this report.