Rookie defensive tackle Keith Jackson, son of the former NFL tight end by the same name, signed a three-year contract Monday with the St. Louis Rams.
Jackson, a 315-pounder from Arkansas, was chosen in the seventh round in the April draft. He became the third 2007 draft choice to sign with the Rams.
Jackson was an all-Southeastern Conference selection last season after registering 79 tackles, 2 1/2 sacks and two interceptions for the Razorbacks. His father, Keith Jackson, starred for the Philadelphia Eagles in the 1980s and 1990s and also played for Miami and Green Bay.
Texans: Wide receiver Bethel Johnson and linebacker Zac Woodfin signed one-year contracts with Houston.
Johnson caught nine passes for 156 yards for the Minnesota Vikings last season. He played for the New England Patriots from 2003-05.
Johnson, 28, has averaged 24.6 yards on 147 career kickoff returns, including two touchdowns of 90-plus yards. He has four touchdown receptions.
Woodfin was out of football last season after playing the final three games of 2005 with Baltimore. He had one tackle.
Eagles: Philadelphia signed Mexican defensive tackle Mauricio Lopez.
A 27-year-old native of Mexico City, Lopez spent three seasons in NFL Europe, playing with Cologne and Amsterdam.
Chargers: Rookie linebacker Anthony Waters was charged with hitting a man who threw a rock at his car on a highway in Myrtle Beach, S.C.
Waters, 22, was arrested last week on a simple assault and battery charge and released on $1,000 bail, Horry County spokeswoman Lisa Bourcier said Monday. No trial date has been set.
Giants: Kenneth A. MacAfee, who played for the New York team during the 1950s, has died.
MacAfee, 77, suffered a suspected heart attack July 4 while playing golf and was pronounced dead later at a Brockton, Mass., hospital, said Natalie Melo of the Conley Funeral and Cremation Service in Brockton.
