The Louisiana pitcher was 1-0 with a 1.26 ERA while making four appearances for the national team, allowing 16 hits and three earned runs in 16 2/3 innings. He struck out a team-best 18 while allowing nine walks.
"I'm pumped about this class," said Williams, who made an unofficial visit to Oklahoma State over the weekend (after taking his official earlier in the year), while many other top recruits were on their official visits. "It's one of the best recruiting classes this year. I think the class has a lot of talent, and there are a lot of different personalities that are really going to help the team out."
Williams said he chose OSU over Texas Tech, Vanderbilt and Ole Miss because of Holliday and the other members of the coaching staff.
"The awesome coaching staff that they hired – Coach Holliday, Coach (Rob) Walton and Coach (Marty) Lees – are all great guys. I'm looking forward to what they can do to develop me as a player and off the field too," said Williams.
But Williams, who is No. 52 on the ESPN Top 60, isn't the highest-ranked high school player expected to sign with the Cowboys during the week-long early signing period.
Right-handed pitcher Thomas Hatch (6-2, 205) of Jenks, Okla., is ranked as the 30th-best high school prospect in the nation by ESPN. He was 7-2 with a 1.60 ERA last season as a junior.
Another right-handed pitcher, Trey Cobb (6-3, 190) from Broken Arrow, Okla., originally committed to LSU but switched to OSU when Holliday and Walton were hired early in the summer. Ranked as the 50th-best prospect, he was 10-2 with 88 strikeouts as a junior, and also hit .317 with 22 RBIs.
The other player on the ESPN Top 60 list who will sign with the Cowboys is infielder Andrew Rosa (6-2, 175) of Owasso, Okla., who is No. 59. He hit .412 with seven home runs as a junior.
But Holliday, Walton and Lees are just as thrilled with the addition of a number of other quality prospects who are expected to sign with the Cowboys.
The list includes right-handed pitcher Tyler Buffett (6-2, 185) from Albuquerque Academy in Albuquerque, N.M., and right-handed pitcher Blake Battenfield (6-3, 175) from Verdigris High School in Claremore, Okla. Battenfield was 8-1 with a 1.25 ERA last season as a junior and 10-2 with a 1.30 ERA as a sophomore, while leading the Cardinals to back-to-back Class 3A state titles.
Also, catcher Robie Rojas (5-7, 170) from Jersey Village High School in Houston, and left-handed pitcher Matt Wilson (6-4, 210) from Highland Park High School in Dallas.