He was twice named to the Major League Lacrosse All-Star Game and has been a member of an MLL Steinfeld Cup championship team.

[2][3] He anchored the defense of the teams that were led on offense by the record-setting trio of revered attackmen Jesse Hubbard, Jon Hess and Chris Massey.

[3] In one game as a senior, he held the Ivy League's leading scorer, Mike Ferrucci of Harvard, scoreless.

[16] In the 1998 NCAA Division I Men's Lacrosse Championship tournament semifinals he held the nation's leading scorer Casey Powell of Syracuse without a goal in the 11–10 victory,[17] but he was injured and had to sit out the finals on crutches.

[20] Cook has worked for the United States Secret Service, American Enterprise Institute and PricewaterhouseCoopers.

His sister, Lauren, played lacrosse at Davidson College in Charlotte, North Carolina.