EDEN PRAIRIE (AP) -- Veteran nose tackle Jerry Ball retired from pro football Friday, just two days before Minnesota Vikings players report to training camp in Mankato.
The Vikings announced the move along with the signings of four draft choices -- defensive tackle Fred Robbins and defensive end Michael Boireau, both picked in the second round, running back Doug Chapman of Marshall, who was picked in the third round, and linebacker Antonio Wilson, a fourth-round pick.
Ball played 13 seasons in the NFL. After playing the 1997 and 1998 seasons in Minnesota, Ball signed with the expansion Cleveland Browns as an unrestricted free agent. But he returned to Minnesota in a trade for defensive end Stalin Colinet and started most of the remaining games for the Vikings at nose tackle last season, finishing with 32 tackles.
The Vikings have not reached terms yet with first round pick Chris Hovan.
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