Career
A fly-half, Williams has played club rugby for Welsh regional team the Scarlets and featured in the Wales Under-20 national team Helping Wales to third in the 2012 Institutional Review Board Junior World Championships. Initially developed by the Ospreys, William"s featured regularly in their U16s and U-18s teams before being signed for the Scarlets in 2010.
At the end of the 2012-2013 season Williams departed from the Scarlets and moved to Leicester Tigers.
Following the departure of fly-halves George Ford and Ryan Lamb, to Bath and Worcester Warriors, before the start of the 2013-2014 season and ex-England fly-half Toby Flood"s poor run of form combining with his decision to depart at the end of the season for Toulouse, Williams established himself as the club"s first choice no.10. Cockerill stating in a British Broadcasting Corporation interview that: "Owen"s starting as our number one now and is keeping a player with 60 England caps on the bench..You"d like to think he"d get an opportunity for Wales if he keeps playing like he is".
On 5 January 2015, it was announced Williams had signed a new contract to stay at Leicester Tigers, despite speculation he would be returning to Wales to play for his home region of Scarlets and increase his chances of getting a Wales call-up.