Stan Wawrinka, Andrey Rublev and Jo-Wilfried Tsonga are the three standouts who were revealed a few months prior. They will be joined by Milos Raonic who is number four seed.
Also involved include the likes of Frances Tiafoe, Fernando Verdasco.
As well as Kyle Edmund and Tennys Sandgren who have been added to the line-up late on due to Alexander Dolgopolov and Richard Gasquet withdrawing.
The tournament has been a staple of the last few seasons as an opener but has moved due to the ATP Cup but this means that more players who are involved previously can now play in the tournament.
Qatar Open Entry List
1 WAWRINKA, Stan SUI 16
2 RUBLEV, Andrey RUS 23
3 TSONGA, Jo-Wilfried FRA 29
4 RAONIC, Milos CAN 31
5 DJERE, Laslo SRB 38
6 KRAJINOVIC, Filip SRB 40
7 MANNARINO, Adrian FRA 43
8 TIAFOE, Frances USA 47
9 VERDASCO, Fernando ESP 49
10 CHARDY, Jeremy FRA 51
11 SONEGO, Lorenzo ITA 52
12 BUBLIK, Alexander KAZ 56
13 BEDENE, Aljaz SLO 58
14 KECMANOVIC, Miomir SRB 59
15 SANDGREN, Tennys USA 68
16 THOMPSON, Jordan AUS 63
17 ANDUJAR, Pablo ESP 64
18 HERBERT, Pierre-Hugues FRA 65
19 BERANKIS, Ricardas LTU 66
20 EDMUND, Kyle GBR 69
21 KUKUSHKIN, Mikhail KAZ 67
22 [WC]
23 [WC]
24 [WC]
25 [Q]
26 [Q]
27 [Q]
28 [Q]