2008 - Marton kicked off his pro career at home Futures and he scored 1 win from 3 tournaments
2009 - 1 Futures match
2010 - Davis Cup debut and 4 ATP qualifying draws entered
2011 - 3 Futures semi-finals
2012 - 2 Futures finals lost and he qualified for his first ATP tournament in s-Hertogenbosch, losing to Tatsuma Ito in the first round
2013 - Cherbourg Challenger quarter-final and the first title in An-Ning. He passed the qualifying round in Metz to beat Jeremy Chardy in the first round and he closed the season with Andria title to enter the Top 200
2014 - Marton lost the Heilbronn Challenger final to Struff and in Todi against Bedene, with 3 other semi-finals
2015 - Qualified for the main draw in Barcelona and played in 2 Challenger semi-finals
2016 - Reached the main draw in Barcelona and at the US Open, with a final in Prostejov Challenger as a qualifier. 3 Challenger semi-finals
2017 - A breakthrough season with 9 ATP wins and his first ATP quarter-final in Basel. He lost the Challenger final at home in Budapest but won Vicenza and Ilkley to earn a Wimbledon wild card. Lost in the third round of Winston-Salem and he led Hungary towards the World Group after heroic wins over Slovakia and Russia, playing part in all 6 winning points for his country