HOUSTON (AP) _ Rafael Robinson, a safety who played four seasons with the Seattle Seahawks, agreed to a contract Tuesday with the Houston Oilers.

Robinson, an unrestricted free agent, is the second free agent acquisition this season by Houston. The other is wide receiver Willie Davis from Kansas City.

Robinson, 26, played in 51 games for Seattle with five starts. His career totals include 169 tackles, 1 1/2 sacks and one interception. He joined the Seahawks as an undrafted free agent from Wisconsin in 1992.

The Oilers also hired Warren ``Rennie'' Simmons as offensive line coach and Alan Lowry as defensive assistant-quality control coach.

Simmons, 54, spent last season as an assistant coach at Vanderbilt. He worked the 1994 season as tight ends coach for the Los Angeles Rams. Before that, Simmons was an assistant coach with the Washington Redskins for 13 years.

Lowry, 45, worked with special teams during a four-year stint with the San Francisco 49ers. He also has been an assistant coach with Tampa Bay and Dallas.