
2002 - Marcel made professional debut at Spain F13 Futures at the age of 16
2003 - First Futures titles and additional four quarter-finals
2004 - Two Futures titles and Challenger debut
2005 - Two Futures titles from six finals for the place in the top-300. Seven Challenger wins
2006 - ATP debut in Barcelona, losing to Andy Murray in three sets. Wimbledon debut as a qualifier and the place in the top-200 in September. The first Challenger title in Barcelona and two more finals. One Futures title
2007 - The first ATP quarter-final in Valencia. Three Challenger finals lost
2008 - A breakthrough run with 15 ATP wins and the maiden title in Houston. One Challenger crown from two finals for the place in the top-60 at the end of the year
2009 - 16 ATP wins and another year-end top-100 season. The semi-final in Chennai and one Challenger final
2010 - Another rock solid season with 21 ATP wins and the place in the top-50 for the first time. Marcel lost in the final of Valencia to David Ferrer and he played in another semi-final in Bucharest, backed by one Challenger title from three finals
2011 - After a poor start of the season, Marcel managed to win two ATP titles in Gstaad and Valencia, winning 27 matches on the Tour and cracking the top-30 for the first time
2012 - 23 ATP wins that kept him inside the top-35. Granollers played in the fourth round at Roland Garros and in the final of Umag, reaching three more quarter-finals by the end of the year
2013 - The fourth consecutive top-45 season after 27 wins and the title in Kitzbuhel. He also reached the last 16 at the US Open and the quarter-final in Sydney, Rome and Gstaad
2014 - Yet another top-50 year after 19 wins, playing in the semi-final of Chennai and the final in Casablanca, entering the last 16 in Paris as well
2015 - 14 ATP wins and the semi-final in Zagreb
2016 - 21 ATP wins and Challenger title in Irving for the top-40 return. Marcel was the quarter-finalist in Monte CarloIstanbul, Los Cabos and Basel and he played in the last 16 at Roland Garros
2017 - Just four ATP wins and the first season outside the top-100 since 2007 after 10 Challenger wins
2018 - Five ATP wins from nine matches and 35 Challenger wins that delivered him two titles from three finals