ORLANDO, Fla. — Francesco Molinari had seen so many clutch birdie putts on the 18th green at Bay Hill, most of them by Tiger Woods in the final group, usually with Arnold Palmer standing next to the green expecting like everyone else for them go in.

It was Molinari’s turn Sunday in the Arnold Palmer Invitational, with a few big differences.

This putt was from 45 feet , longer than anything Woods ever made. And while it capped off an 8-under 64 and eventually gave Molinari a two-shot victory, the British Open champion had to wait nearly two hours to see if his score would hold up.

One more difference.

“I was the first to make it with the flag in,” Molinari said with a big smile, alluding to a new rule that allows the flag stick to stay in the cup with putts.

All that mattered was that it dropped, capping off a five-shot rally with a final round no one imagined on a fast Bay Hill course with putting surfaces that looked closer to white than green.

“He’s obviously holed a lot of putts to do that because you can’t get close to these pins,” Matt Fitzpatrick, the 54-hole leader, said after a 71 to finish second.