Rickie Fowler took a share of the lead into the weekend in the Phoenix Open but he knows from experience the party is just getting started.
Fowler was tied with Bryson DeChambeau, with each shooting his second straight five-under 66 on Friday.
Australian PGA Championship winner Cameron Smith fired a four-under par 67 to follow up his opening round 69.
He is in a tie for 19th to be the best-placed Australian, four shots clear of Aaron Baddeley who has carded rounds of 72 and 68.
Fowler has had a lot of success at TPC Scottsdale without winning.
He finished a shot behind Hunter Mahan in 2010, lost to Hideki Matsuyama on the fourth extra hole in 2016 and tied for fourth last year.
Daniel Berger and former Arizona State player Chez Reavie were a stroke back.
The festive tournament drew a Friday-record crowd of 191,400 fans, bringing the week total to 439,088.
The third-round mark of 204,906 set last year is expected to be shattered on Saturday, and the week record of 655,434 from last year could fall with a day to spare.
