"It was the offense they run," Williams told CF.C. "Four or five teams were trying to sign me but (San Diego) was there for our pro day stuff and I talked to them a lot. As the draft was (concluding) I was talking to Green Bay and other teams were telling me to sign with them afterwards.
"The biggest thing with Coach Leach is he prepared me mentally. If anything goes bad or people downgrade you, your skills, he prepared us mentally. He told us to block all that out... he told me all the time, I'm here (starting) for a reason."
Also, LB Ivan McLennan has signed as an undrafted free agent with Atlanta.
McLennan played in all 13 games his senior season at WSU, starting 10. He finished with 42 tackles, 9 tackles-for-loss and 6 sack.
Meanwhile, Williams concluded his Washington State career ranked No. 3 on the school's all-time receptions list (192), No. 2 in receiving yards (2,889) and No. 2 in TD catches (30).
This past season he caught 75 passes for 1,040 yards and 11 touchdowns and earned honorable mention All-Pac-12 honors.
"I'm stoked," said Williams. "I'm going back to Southern California and a great team, a great orgnaization."
Williams and McLennan make for four Cougars to sign as undrafted free agents on Saturday. LB Kache Palacio and DT Destiny Vaeao also signed with the Rams and Eagles, respectively.
Dom Williams NFL Pro Day Measurements:
40 time (best): 4.39 seconds
Vertical leap: 40 1/2 inches
Broad jump: 10 feet, 5 inches
Bench: 11 reps of 225 pounds
Expert Analysis on Williams:
NFL.com: Productive touchdown catcher who has a feel near the red zone ... Tested off the charts at his pro day with blazing speed and an explosive vertical leap ... Big enough to grind out additional yardage after the catch ... Fights against focus drops on big catch opportunities down the field ... speed doesn't always present itself on tape thanks to issues he has getting into his routes against physical cornerbacks.
Rob Rang, CBS Sports: Williams possesses the broad shoulders and steady acceleration scouts are looking for in outside receivers and his production speaks for itself. He is at his best tracking passes over his shoulder, showing some stiffness when changing directions and occasionally fighting the ball when coming back towards his quarterback.
Turfshowtimes.com: His size-speed combo often times forces defenders to play off, and in these instances you will see him catch the ball on slants and drags and literally split defenders. It's quite impressive especially considering his size.