Rahm, who had won three titles in his first full season in 2017, added three more in 2018.
Anyway, more unedifying about the Hero World Challenge was that the victor, Spaniard Jon Rahm, picked up the same World Ranking points - 48 - as the victor of the Aberdeen Asset Management Scottish Open and Dubai Desert Classic.
"That Sunday is one of the most emotional, most important moments in my golf career", he said.
Englishman Justin Rose (65) was another shot back in third.
He said: "When we were at East Lake, Tiger was putting next to me". You know, I'm not the best, I grew up on poa annua-bentgrass. He kind of laughed and said, 'It's all about feel out there'. "A couple months later to win his event, this is really special". "And today out there with the trophy, he said, "That's a pretty good performance for somebody who can't put putt on Bermuda greens", Rahm smiled. He said: "It's not a huge goal for me to be No. 1 but, when you have these opportunities, you want to take them".
It just wasn't Tiger Woods' day or week as he shot 73, his second over par round of the week and finished 17th in the 18-man field.
"The entire year has been awesome and I've just been so blessed to have the opportunity", said Woods.
"To come from where I came from, to play and compete again and do it consistently is quite fantastic".
Woods was then headed to his private jet to Los Angeles to board a Qantas flight to Melbourne and arriving Tuesday for a three-day Presidents Cup inspection and promotion of the event being staged later next year on the famed Royal Melbourne course.
Speaking at the Hero World Challenge in the Bahamas, Woods said his desire was as strong as ever but acknowledged that his middle-aged and much-operated-on body was not able to do all the things his younger self could.
"The entire year has been incredible and I've just been so blessed to have the opportunity", said the 14-time Major champion, who turns 43 on Dec 30.