His only victory in a British Darts Organisation sanctioned event came at the 2008 Flanders Open where he defeated Geert De Vos 5–2 in the final.

He then beat Wes Newton 10–8 in the second round to book his place in the quarter-finals, where he narrowly lost 10–8 to world champion Adrian Lewis.

Huybrechts revealed after the match that his performances had earned him new sponsors, which will help him play all the tournaments on the PDC circuit for two years and admitted that it was his "biggest achievement of his career to date".

[13] He then represented Belgium with Kurt van de Rijck in the 2012 PDC World Cup of Darts and reached the quarter-finals, where they were defeated by Australia 1–3, having beaten Sweden in the second round.

[17] Huybrechts threw a nine-darter in a third round match in the seventh UK Open qualifier of the season against Terry Jenkins, but went on to lose 4–6.

[21] Huybrechts led 7–4 having hit seven doubles from as many attempts, but his finishing power soon deserted him and he went on to miss five darts to win the game in the final leg and lost 8–9.

[29] Huybrechts had a disastrous debut at the World Grand Prix in October, as he lost 0–2 in sets to Kevin Painter without winning a leg,[30] but returned to form at the Dutch Darts Masters, by reaching his fifth semi-final of the year.

[31] After all 33 ProTour events of 2012 had been played, Huybrechts finished ninth on the Order of Merit to qualify for the Players Championship Finals for the first time.

[42] He went one better in the seventh event, sealing his first title on the PDC tour with a 6–2 win over John Part in the final having earlier exacted his revenge over van Gerwen in the fifth round by beating him 6–4.

[43] His performances after all eight events had been played saw him finish third on the UK Open Order of Merit,[44] but he lost 6–9 to Terry Jenkins in the fourth round.

[45] Huybrechts was the victim of clinical finishing in the first round of the World Grand Prix as Andy Hamilton hit six out of six doubles to beat him 2–0 in sets.

[46] However, less than two weeks later he claimed his second Pro Tour title of 2013 at the 12th Players Championship by whitewashing Kevin Painter 6–0 in the final which included a 170 checkout in the second leg.

[54] Huybrechts qualified for the 2014 PDC World Darts Championship as the 12th seed and remarkably was drawn to once again face off with his brother Ronny in the first round.

[56] Huybrechts hit back from 3–0 behind in the next round against Ian White to level the game, but missed too many chances in the deciding set to exit the tournament 4–3.

Kim produced a superb display to defeat Van Gerwen 4–2 with an average of 106.76, which included a crucial 160 finish in the fifth leg to break the Ducthman's throw when he was waiting on 36.

[62][63] His semi-final match against Dave Chisnall swung in the favour of both players as Huybrechts was 4–1 behind, before edging 14–12 ahead but ultimately lost four of the last five legs to succumb to a 16–15 defeat.

[64] At the 2015 World Championship, Huybrechts gained revenge for his 4–3 loss against Ian White 12 months earlier by beating him by a reversal of this scoreline, winning six of the last seven legs.

[65] Huybrechts appeared undeterred by the comments as he celebrated almost every important visit to the board and leg winning doubles which saw him lead Taylor on three different occasions.

[78] Huybrechts won his first title of 2015 at the European Darts Grand Prix by coming back from 5–2 down against Peter Wright to triumph 6–5, hitting checkouts of 157 and 140 in the process.

[79] A 10–9 win over three-time BDO world champion Martin Adams set up a rematch with Van Gerwenin the quarter-finals of the Grand Slam, but Huybrechts was unable to repeat his heroics from 12 months earlier as he was thrashed 16–4.

[80] After taking a 2–1 set advantage over David Pallett in the opening round of the 2016 World Championship, Huybrechts lost six consecutive legs to be beaten 3–2.

[84] A 2–1 win over Ian White and 3–0 whitewash of Stephen Bunting saw Huybrechts reach the quarter-finals of the World Grand Prix for the first time.

[87] Huybrechts averaged 110 during a 10–1 thrashing of Ted Evetts in the fourth round of the UK Open and progressed to his first quarter-final in the event with a 10–9 win after Joe Cullen missed one match dart.