Rory McIlroy started his third round with two bogeys but recovered to shoot two rounds under 70
Rory McIlroy and Tommy Fleetwood, trail leader, all at once, Rahm, will qualify for the last round of the Players Championship at Sawgrass.
McIlroy of Northern Ireland and Fleetwood of England recovered in the third round after a poor start to the match and managed two shots under par 70.
The Spaniard Rahm has four birdies and an eagle at the back of his 64 years.
Jason Day (68) is 12 years old, Abraham Ancer (70) is 11 years old and world number one Dustin Johnson (69) is 10 years old.
Johnson is joined 10 times by his American compatriots Ollie Schniederjans (65), Brandt Snedeker (65), Keegan Bradley (68), Brian Harman (71) and Jim Furyk (71).
McIlroy is looking for his first tournament win for more than a year, while Fleetwood has not won in the United States yet.
Fleetwood told Sky Sports: "I had some very quick shots and I did an absolute hash of the first hole after a good start, which was followed by poor shots at four, six. and seven.
"It was a real test of courage and mental strength, I succeeded and I did very good things at the back nine.I am really delighted with the way that this it's over. "
McIlroy told NBC Sports: "Going below average was a good effort after two early bogeys.
"Once tied, I felt I was in the ground, I was not driving well and I'm going to work on it now on the shooting range."
Rain and strong winds are forecast for Sunday's final round in Florida.
McIlroy & Fleetwood is recovering from its difficult start
Tommy Fleetwood finished second at the US Open last year
World number six, McIlroy and Fleetwood, ranked 13th, were co-leaders with three out of 12 throws before the start of the third round, but quickly narrowed their advantage with poor starts.
The Northern Irishman took his first place in the normal with a fluffy token and his third shot from the right of the green led to a bogey.
Fleetwood found the fairway on the tee, but a bad second and three putts led to a double bogey.
McIlroy was followed by another normal bogey in the fifth inning when he had dropped to 10 under par, but he quickly found the runway with a two-thirds normal to third. Other birdies followed in seventh and eighth places, while it went to 13 cents at the turn.
Eight pars and a lone birdie at the back of the 11th showed the consistency that allowed McIlroy to place in the top six among the top six of his five PGA tour tournaments so far. this season.
His playmate Fleetwood scored second after his first six games, but then bogged down the fourth and seventh to go under.
A birdie in the eighth and eight-foot normal for the 10th match helped him regain pace and he got more shots on 11, 12, 16 and 17, where his tee shot ended at two. Flag feet of the famous green island.
"On the 10th, I managed a huge par-putt that was big and I managed something," added Fleetwood.
"I'm just happy to finish this round, I have a chance now and I can get up tomorrow and try to find the pace I've had for two days."