He made his professional debut on 22 March 2009, in Galaxy's first game of the 2009 MLS season against D.C. United,[3] and provided the assist on Landon Donovan's equalising goal.

With the MLS Reserve Division having been scrapped at the end of 2008, Galaxy briefly loaned Patterson to the Hollywood United Hitmen of the USL Premier Development League to maintain his match fitness levels.

Patterson was waived by Galaxy on 25 November 2009,[5] having played in three MLS games for the team, and later signed with the Swedish Allsvenskan club GAIS.

[6] Patterson left GAIS later that year, and after attending trials with several professional clubs in England, joined Hednesford Town.

[8] With a day to go until the first game of the season, Patterson left The Lambs to join local rivals Nuneaton Town.