Butch Harmon reckons Henrik Stenson can give Tiger Woods "a run for his money" on the final day of the WGC-Bridgestone Invitational.
The Swede (-8) trails leader Woods (-15) by seven strokes heading into round four at the Firestone Country Club in Ohio, but has landed big titles before, most notably the 2007 WGC-Accenture Match Play and the 2009 Players Championship.
Harmon thinks that experience will stand Stenson in good stead when he tees off with Woods on Sunday - though he says it is hard to see the American blowing his chances of an eighth Bridgestone crown.
"He has been there before and is comfortable playing with Tiger and I think he can give him a run for his money," Harmon said of Stenson, who finished second to Phil Mickelson at this year's Open Championship at Muirfield and sits 19th in the world rankings.
"He played really well on Saturday and if he can get off to a good start and make some birdies early on Sunday, who knows what can happen - but will Tiger really give him a chance?"
Woods did not repeat Friday's Firestone fireworks on Saturday - scoring a two-under-par 68 as opposed to his scintillating nine-under 61 the previous day - but Harmon says the world number one did exactly what was required.
"Tiger did what he had to do - he got off to a birdie-birdie start and shot a couple under par - and I was very impressed," added Harmon, who coached 14-time Major winner Woods between 1993-2004.
"You never thought he was going to go like he did on Friday because he was never going to put himself in a position to shoot such a low number; he was just going to plot his way around and he did it beautifully.
"He feels comfortable around Firestone - he has proved that by winning here seven times before, and he is now on the verge of making that eight as he is playing as well as he can play."
Golf's leading lights will move onto the final Major of the season, the USPGA Championship, once the WGC-Bridgestone Invitational has reached its conclusion. Makes sure you catch all the action from Oak Hill County Club in New York from 6pm on Thursday on Sky Sports 1.