By the age of 10 Jacobson was a promising ice hockey player. However, one of the players at Jacobson's club--who was also the local golf pro and would eventually teach all of Jacobson's family--suggested he take up golf. By the age of 15, Jacobson was a scratch golfer and would progress to collect a cache of golf titles and awards before turning professional by the age of 20.
From his early days on the European Tour, Jacobson's career was a steady stream of successes. However, the 2003 season proved to be his making. Eventually placing fourth on the European Tour Order of Merit (money list), Europe proved a happy hunting ground for Jacobson, as he claimed victories at the Omega Hong Kong Open, Algarve Open de Portugal and the Volvo Masters. During that season, Jacobson amassed more than $2 million in winnings.
In 2004, with winnings of more than $1 million, he participated in five events including a T5 at the Omega Hong Kong Open, but since has been largely absent from the European PGA Tour, choosing instead to concentrate on the PGA Tour.
During his rookie year in 2003, Jacobson has proved a steady influence across the courses of the PGA Tour. While amassing more than $700,000 in earnings for a season that lasted four months, he tied for second in his first tour event, the U.S. Open Championship. The following month he collected three further top 10 finishes.
Toward the latter part of the 2009 season, Jacobson had played in more than 100 tour events, making the cut in 73, with more than $5 million in winnings.
Although yet to win a tournament, his best PGA Tour career finish since the 2003 U.S. Open is a T2 at the 2007 Ginn sur Mer Classic. At that point it was Jacobson's best finish in 96 starts.
Jacobson's career has witnessed a mini-slump during 2009, missing nine cuts in his first 17 events, dropping him to 112th on the Official World Ranking list toward the latter part of the season. He also withdrew from the Northern Trust Open in February and the Puerto Rico Open in March. However, March saw Jacobson claiming a T5 spot at the Honda Classic and the same position during the Valero Texas Open in May.
Jacobson's talent hasn't yet proven enough to win him a place on the European Team. In 2004, Jacobson had the opportunity to make the team had he won the 2004 BMW International Open in Germany. Needing a birdie on the 72nd hole to lift the trophy, Jacobson instead made par to finish sixth. That result left the Swede's Ryder Cup hopes with European captain Bernhard Langer. However, he used his final Captain's Pick on England's Luke Donald, rather than Jacobson.
Jacobson did represent Sweden during the World Cup of Golf in 2003 and 2004.
Jacobson, along with his countryman and fellow PGA Tour member Jesper Parnevik, is renowned for his dress sense and has been turning heads with brightly-colored shirts and sweaters since his rookie year on the PGA Tour.
Jacobson has recently joined the Callaway group and uses the FT series of drivers and the X-forged irons and the CallawayTour ix golf ball.
Along with his wife and two children, Jacobson resides in Monaco.