ATP 250 Houston, 9-15 April (outdoor clay): the American event will be headlined by three big servers, John Isner, Kevin Anderson and Sam Querrey. Isner will seek his second title after winning in 2013, while Querrey will try to triumph for the first time.

He lost 2010 and 2015 finals. Steve Johnson, who won last year's final beating Thomaz Bellucci, will be the defending champion. Jack Sock and Fernando Verdasco, respectively 2015 and 2014 winners, entered, as well as Hyeon Chung, Feliciano Lopez, the 2007 winner Ivo Karlovic and Frances Tiafoe.

The world No. 101 Lukas Lacko is the last player to make it into the main draw, while the young Italian Matteo Berrettini, 104th ranked, is the first alternate. Here below full entry list:

1 ANDERSON, Kevin RSA 8

2 SOCK, Jack USA 10

3 QUERREY, Sam USA 11

4 ISNER, John USA 19

5 VERDASCO, Fernando ESP 27

6 CHUNG, Hyeon KOR 29

7 LOPEZ, Feliciano ESP 38

8 JOHNSON, Steve USA 47

9 PELLA, Guido ARG 57

10 SANDGREN, Tennys USA 58

11 HARRISON, Ryan USA 60

12 TIAFOE, Frances USA 61

13 ZEBALLOS, Horacio ARG 69

14 FRITZ, Taylor USA 77

15 KARLOVIC, Ivo CRO 80

16 YOUNG, Donald USA 89

17 THOMPSON, Jordan AUS 92

18 MILLMAN, John AUS 93

19 KICKER, Nicolas ARG 96

20 CHARDY, Jeremy FRA 97

21 LACKO, Lukas SVK 101

22 [WC]

23 [WC]

24 [WC]

25 [Q]

26 [Q]

27 [Q]

28 [Q]



ALTERNATES

1 BERRETTINI, Matteo ITA 104

2 ANDUJAR, Pablo ESP 105PR

3 DANIEL, Taro JPN 107

4 FRATANGELO, Bjorn USA 111

5 MENENDEZ-MACEIRAS, Adrian ESP 114

6 KAVCIC, Blaz SLO 116

7 HANFMANN, Yannick GER 120

ATP 250 Marrakech, outdoor clay (9-15 April 2018): no top 20s, but several ineresting players committed to the event that opens with Houston the spring clay-season. The defending champion Borna Coric will try to reach his third final in a row (he lost in 2016 to Federico Delbonis, who will play this year as well). Also the defending finalist Philipp Kohlschreiber, who lost just to Coric in a three-set final last year, Kyle Edmund, Filip Krajinovic, Albert Ramos and two former winners of this tournament - Delbonis himself and Guillermo Garcia Lopez (2014) entered. Three Frenchmen will be there: Gael Monfils, who played four events in a row on clay jn February, Richard Gasquet and Benoit Paire. The world No. 78 Thomas Fabbiano is the last player to make it into the main draw, Roberto Carballes Baena is the first alternate.

1 RAMOS-VINOLAS, Albert ESP 22

2 EDMUND, Kyle GBR 25

3 DZUMHUR, Damir BIH 30

4 KOHLSCHREIBER, Philipp GER 33

5 KRAJINOVIC, Filip SRB 34

6 MONFILS, Gael FRA 35

7 GASQUET, Richard FRA 37

8 HAASE, Robin NED 43

9 PAIRE, Benoit FRA 46

10 DOLGOPOLOV, Alexandr UKR 48

11 CORIC, Borna CRO 50

12 LORENZI, Paolo ITA 53

13 ZVEREV, Mischa GER 54

14 STRUFF, Jan-Lennard GER 56

15 SEPPI, Andreas ITA 62

16 VESELY, Jiri CZE 63

17 FUCSOVICS, Marton HUN 64

18 DELBONIS, Federico ARG 65

19 TROICKI, Viktor SRB 66

20 GARCIA-LOPEZ, Guillermo ESP 67

21 SIMON, Gilles FRA 68

22 MARTERER, Maximilian GER 71

23 SOUSA, Joao POR 72

24 BASIC, Mirza BIH 76

25 FABBIANO, Thomas ITA 78

26 [WC]

27 [WC]

28 [WC]

29 [Q]

30 [Q]

31 [Q]

32 [Q]

ALTERNATES

1 CARBALLES BAENA, Roberto ESP 79

2 BASILASHVILI, Nikoloz GEO 84

3 ALBOT, Radu MDA 86

4 DJERE, Laslo SRB 90

5 LAJOVIC, Dusan SRB 91

6 ELIAS, Gastao POR 102

7 CECCHINATO, Marco ITA 103

8 BERRETTINI, Matteo ITA 104

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