Tiziani's total of 196 matched the 54-hole record that Rick Cramer set in 1996. Tiziani will go for his first tour win on Sunday. Not only will he have that pressure, but of the last 11 54-hole leaders on the Nationwide Tour none have held on for the win.
'It's unchartered waters for me. I have not been in this position very much this year, maybe a couple times after round two,' admitted Tiziani, who holds the 54-hole lead for the first time in his career. 'This is what we play for though. I know there will be some nerves. The tough part will be trying to do the same things I've been doing.'
Second-round leader Kevin Stadler managed a 1-under 70 and is alone in second place at minus-15. Glen Day stands in third place at 13-under-par 200 after a 5-under 66.
Former U.S. Amateur champion Jeff Quinney posted a 67 and was joined in fourth place at minus-12 by Jason Allred and Scott Dunlap.
Tiziani got off to a hot start and that carried him past Stadler for the lead. Tiziani birdied the first, then eagled the par-5 second to join Stadler in the lead at minus-14.
The 36-year-old Tiziani then birdied the third at Hillcrest Country Club, but trailed by one as Stadler birdied two and three. He settled in with seven consecutive pars, but he remained one up on Stadler.
Tiziani ran home a long birdie putt on the 11th and came right back with an 18-footer for birdie on 12 to get to 17 under, three clear of Stadler. Tiziani was unable to save par from a bunker on 13. He recovered that stroke with a two-putt birdie on the par-5 16th before carding pars on 17 and 18.
'I feel like I've been close all year even though I haven't played remotely well,' said Tiziani, who has just one top-10 this season and has made just seven of 19 cuts. 'Everything is coming together right now though.'
The bogey Tiziani made on No. 13 was his first since his fourth hole on Thursday. He admitted afterwards his confidence has not been where it should be this year.
'Confidence has been the big thing. It has kind of been getting eaten away as the year has gone on,' Tiziani stated. 'It seems to come back so quick when you hit a lot of good shots and I feel like it's coming back.'
Stadler, who played right behind Tiziani, opened with birdies on two and three to lead by one. He tumbled out of the top spot with bogeys on four and six.
The 26-year-old parred five straight, then sank an 18-footer for birdie on 12. Stadler bogeyed 13 and 14 to slip to 13 under par, three behind Tiziani.
Stadler caught fire late though. Like Tiziani, Stadler two-putted for birdie on 16. Then he dropped in an 8-footer for birdie at 17 to get within two.
'That was very frustrating, but I'm happy to shoot under par,' admitted Stadler. 'I didn't hit many solid shots. I started out poorly and I let it get to me. Under par was a good score for me today.'
Ricky Barnes carded a 4-under 67 to move into a share of seventh at 11-under-par 202. He stands alongside Tripp Isenhour and Jay Williamson. Australians Jarrod Lyle and Andrew Buckle share 10th place at minus-10.