* Kokrak fires a 64 to set pace
* Watson and McIlroy in close pursuit
* Spieth misses the cut by five shots (Updates at close of play)
By Mark Lamport-Stokes
PACIFIC PALISADES, California, Feb 19 (Reuters) - Journeyman Jason Kokrak, best known for his power hitting, moved one shot clear after the second round of the Northern Trust Open on Friday as world number one Jordan Spieth missed the cut.
American Kokrak, whose best PGA Tour finish was a tie for second at the 2012 Frys.com Open, charged to the top of the leaderboard with a sparkling seven-under-par 64 on a sun-splashed day at Riviera Country Club.