Rose is still searching for his maiden PGA Tour win

R2 LEADERBOARD:
US unless stated
-17 J Rose (GB)
-13 T Ridings
-12 T Matteson
Selected others:
-10 R Johnson (Swe)
-9 G Owen (GB)
-7 V Singh (Fij), B Davis (GB)

Justin Rose continued his superb form at the Walt Disney Classic in Florida with a four-shot lead after two rounds.

The Briton, who claimed a course record 12-under-par 60 on Thursday, holed seven birdies and two bogeys to finish the round on 17 under.

Play was cut short on Friday because of bad light with Rose on the green at the 17th hole.

He duly putted the birdie on Saturday morning before bogeying the 18th to lead America's Tag Ridings by four.

Vijay Singh, the 2003 champion and the highest ranked player in the Orlando field, hit a three-under 69 but remains well back at seven under.

The 26-year-old Rose began Friday's play in sensational style, carding back-to-back birdies on the first two holes of the Magnolia course.

"Starting birdie-birdie was a good thing and got me back on the horse," he said.

He picked up four more birdies over the next 10 holes before the bogey at the 13th.

"It was a long day and I began to get a little distracted, so, yes, that was a reason for that (bogey)," said Rose, who collected four pars before play was halted on the 17th.

"I had a little slow patch coming in, but it was tough. It was getting dark, so I'm looking forward to a fresh start (on Saturday)."

American Ridings shot an impressive round of 66, including seven birdies, to move into second place.

Compatriot Troy Matteson is one shot behind after carding a seven-under, the highlight of which was two eagles in his closing nine.