Rahm racked up multiple wins on the PGA and European Tours and victory in the 2020 Memorial Tournament saw him become the 24th man and just the second Spaniard to top the world golf rankings, a spot he would concede in early 2022.
A Major still eluded him but Rahm climbed that mountain with a brilliant victory in the 2021 US Open at Torrey Pines, holing birdie putts at the final two holes to win by one.
That victory on the California coastline also saw him return to World No.1.
Later that year he won his third Open de Espanan title and the European Tour's season-ending DP World Tour Championship.
He has enjoyed success on both the PGA Tour and the European Tour, claiming the Irish Open twice to go with two titles won in his native Spain.
Late in 2018 he made his Ryder Cup debut, a week that featured victory in the singles over Tiger Woods, and shortly afterward he was invited to, and won, Woods' Hero World Challenge.
Leading the world
A month into the restarted 2020 season, Rahm seized the world number one ranking with a three-stroke victory in the Memorial Tournament at Muirfield Village Golf Club in Dublin, Ohio.
Later in the year, he hit a remarkable trick shot hole-in-one in practice ahead of the 2020 Masters, skipping the ball over the pond on the 16th hole before watching it roll in.
Rahm went on to record his fifth top 10 finish in a Major Championship at Augusta, but the wait for a first win continued.
Rahm becomes a Major champion
Winning the green jacket at the 2023 Masters
LIV golf switch
Rahm joined LIV Golf on December 8, 2023 in a massive coup for the Saudi-funded breakaway.
The 29-year-old became the second current major champion on the LIV circuit after US PGA champion Brooks Koepka.
“Every decision I feel like we make in life there will be somebody who agrees and likes it and somebody who doesn’t, right,” Rahm said.
“I made this decision because I believe it’s the best for me and my family and everybody I’ve been able to talk to has been really supportive of me, so I’m very comfortable with my decision.
“I’m no stranger to hearing some negative things on social media or in media. It’s part of what it is, we’re public figures but you just learn to deal with it right? This certainly won’t define who I am or change who I am.”
Following confirmation of his switch to LIV, Rahm added in an official press release statement: “I am proud to join LIV Golf and be part of something new that is bringing growth to the sport.
“I have no doubt that this is a great opportunity for me and my family and am very excited for the future.”
Rahm played a leading role in Europe’s 2023 Ryder Cup victory in Rome – but joining LIV placed his future in the contest in serious jeopardy as he needs to remain a DP World Tour member to be eligible.
On his Ryder Cup future, Rahm said in the conference call: “My position with the Ryder Cup stands as it’s always been. I love the Ryder Cup.
“I’ve explained many times how meaningful it is to me and I surely hope I can be in future editions of the Ryder Cup.
“That’s not up to me right now, but if it was up to me, I’ll be eligible to play so I surely hope I can keep up the good golf, keep playing good golf and give them a reason to have me on the team.”
“It’s a big risk to take, but I’ve had it in consideration and again, I’m hopeful that I can be part of the team again.”
Rahm expressed his “fealty” to the PGA Tour in February 2022 and, in September that year, rubbished rumours that he would jump ship in reply to a post on Twitter which claimed he was about to sign for LIV.
The Spaniard had gone on record to state “my heart is with the PGA Tour”, but later admitted players felt a sense of “betrayal” at the secret deal which was negotiated between the PGA Tour, DP World Tour and Saudi Arabia’s Public Investment Fund, which bankrolls LIV Golf.
Speaking ahead of the 2022 US Open at Brookline, the week after LIV had staged its first event, Rahm also said the 54-hole format held no appeal and hinted that he had turned down an offer of 400million US dollars (£315m) to switch circuits.
However, after signing on with LIV, the Spaniard said: “Obviously the past two years there’s been a lot of evolving on the game of golf, things have changed a lot and so have I.
“Seeing the growth of LIV Golf, seeing the evolution of LIV Golf and innovation is something that has really captured my attention.
“I think the growth that I’ve seen and how it’s become a global business, right, and how we can impact golf globally, and in a much meaningful way, is something that’s been very enticing.
“For all those things that I like about this movement, there’s always going to be some things that are not perfect, but that’s the situation in everybody’s life.
“With that said, it’s an ever-growing and ever-changing machine, right. So I’m hopeful that the leaders of LIV Golf might listen to some of my advice and maybe see some changes in the future for the better of the game.”
Jon Rahm's personal life
The couple welcomed a first son, Kepa Cahill, to the world in the week before the 2021 Masters, their second child Eneko Cahill Rahm arrived in August 2022.
Jon Rahm's net worth
Rahm only turned professional in 2016 but has already earned more than $30million in combined prize money from the PGA and European Tours.
His net worth is estimated to be somewhere in the region of $20million with sponsorship deals and endorsements from major brands.
Rahm has earned more than $5million in a single season twice in four full PGA Tour campaigns, and he is already in the top 50 on the Tour's career money leaders' list.