The Andalucía Valderrama Masters hosted by the Sergio Garcia Foundation will prove the battle ground for those looking to retain their playing privileges in 2019.
The top 116 players in the Race to Dubai Rankings presented by Rolex at the end of the week will be guaranteed a European Tour card for next season.
We take a look at some of the high-profile players on the bubble ahead of the action at Real Club Valderrama.
Tournaments played: 218
Prize money: €6,494,963
Current ranking: 118
The Italian burst on to the scene with three top-25 finishes from four European Tour sanctioned events as a 16 year old amateur in 2009, including an impressive tied for 13th in the 138th Open Championship at Turnberry Resort. Manassero took his good form into the professional ranks and recorded three top-three finishes in his debut season, including a victory at the Castello Masters Costa Azahar. He secured wins in each of the next three seasons and finished 11th on the Race to Dubai Rankings in 2013. The four-time European Tour winner has not registered a top-ten result from 25 events in 2018, but a top-ten finish at Real Club Valderrama would almost certainly ensure he keeps his card.
Tournaments played: 270
Prize money: €6,197,521
Current ranking: 116
Since topping the Challenge Tour Rankings in 2008, the Englishman has been a consistent presence on the European Tour. After his debut year, which returned a second-place finish and 76th in the Rankings, 2012 was the only other year he has ended up lower than 69th on the money list. His first win came at the BWM International Open in 2010, and he also claimed victories at the Trophee Hassan II the following year, the 2014 M2M Russian Open and the 2015 Made in Denmark. The 33 year old has been runner-up three times since, but this year a T7 finish at the Shot Clock Masters is his best return. A top-ten this week should be enough to secure his playing privileges for another year.
Tournaments played: 268
Prize money: €6,984,596
Current ranking: 124
An impressive 2008 on the Challenge tour saw Ramsay earn his playing card on the European Tour and despite taking a while to adjust to the top level, he managed top-50 finishes in the European Order of Merit in three consecutive seasons from 2010, with the Scot passing the €1million mark for the first time in 2012. Ramsay has been comfortable in securing his card ever since, adding another win at the 2015 Trophee Hassan II. Last season saw the 35 year old pass the €1million mark once again - helped by a second place at the Dubai Duty Free Irish Open hosted by Rory McIlroy Foundation - but in 2018 he has just one top-ten result from 21 tournaments. He could have to finish as high as sixth this week to guarantee his playing privileges for next year.
Tournaments played: 378
Prize money: €7,768,765
Current ranking: 144
Warren wasted little time in picking up silverware after gaining his European Tour card for the 2006 season. His victory at the EnterCard Scandinavian Masters helped him win the Sir Henry Cotton Rookie of the Year Award. The next year he lifted the Johnnie Walker Championship at Gleneagles and won the World Cup alongside Colin Montgomerie. His next victory came in 2014 at the Made in Denmark, while he had two second places in the next three years. He has struggled this year and likely needs a top-three finish to retain his playing privileges, but he will take encouragement from his recent form which saw him card a 64 in the second round of he Portugal Masters and claim a top-35 finish at last week's Sky Sports British Masters.