He was the second overall pick in the 1948 BAA draft, but never played in the league that was the predecessor of today's National Basketball Association.

Because of the shortage of athletes at the end of World War II, Kok was able to play a full four seasons 1944–45 to 1947–48 (versus the usual 3 years of eligibility in most instances up until the 1970s).

Standing 6 feet, 10 inches tall, Kok dominated the game from his freshman days, averaging 18.7 points in his first season.

He still ranks number 11 on the all-time Arkansas scoring list at the start of the 2008–2009 season and his career total was not surpassed for 30 years.

Kok was selected as the number two pick overall by the Indianapolis Jets in the 1948 BAA draft, but never signed with the team nor played in the league.