Only first-round pick Jason Smith, an offensive tackle from Baylor who was the second overall selection, remained unsigned. Practice begins Thursday for quarterbacks, rookies and selected veterans with the first full-squad workout under new coach Steve Spagnuolo on Friday.
Laurinaitis, an All-American from Ohio State, totaled 375 tackles in college. He was the 35th overall pick of the draft.
Scott, 6-foot-3 and 312 pounds, was a three-year starter at nose guard and started his final 38 games in college. He totaled 161 tackles with nine sacks and 36 quarterback pressures over four seasons.
Null, 6-4 and 220 pounds, holds school career records for yards passing (9,769), completion percentage (67.5), touchdown passes (92) and total offense (9,174). He also holds Lone Star Conference career records for yards passing per game (315.1) and touchdown passes (92).
Null was MVP of the Valero Cactus Bowl, the Division II All-Star game, after his senior year. He passed for 240 yards and three touchdowns in that game.
In other news Wednesday, defensive tackle Hollis Thomas signed with the Rams after being released by the Saints in April.
The 35-year-old free agent is a 13-year veteran and played the
last three seasons with New Orleans. He spent his first 10 seasons
with the Eagles after signing as an undrafted free agent in 1996,
and has started 123 of 162 career games with 20 sacks.
Information from The Associated Press was used in this report.