Ten first-team regulars have joined up with their respective national teams ahead of another round of World Cup qualifiers. Benfica fans will be hoping that all ten avoid injury ahead of the crucial Clássico on April 1st. Read on for a rundown of who is playing when.

Nélson Semedo, Pizzi and Eliseu have all been included in Fernando Santos' latest Portugal squad. The Seleção will play a World Cup qualifier against Hungary at the Estádio da Luz on Saturday 25th March, and a friendly with Sweden at the Estádio dos Barreiros on Tuesday 28th March. Portugal sit second in Group B after four matches, two points ahead of third-placed Hungary. The two sides played out an entertaining 3-3 draw at Euro 2016.

Victor Lindelöf
could face his Benfica teammates when Sweden take on Portugal in Madeira. Before that, his country host Group A rivals Belarus on Saturday 25th March. Lindelöf has won eleven caps for Sweden since his senior international debut against Turkey in March 2016.

Andreas Samaris and Kostas Mitroglou should both be in action this Saturday, when Greece take on Belgium in a World Cup qualifier at the King Baudouin Stadium in Brussels. A win would enable the Greeks to leapfrog their opponents and take top spot in Group H. 

Ljubomir Fejsa
was initially named in Slavoljub Muslin's Serbia squad, but he was forced to withdraw with the ankle injury that has kept him out of Benfica's last six matches. The 28-year old midfielder will be desperate to be fit for the Clássico in ten days time.

Jhon Murillo
, currently on loan at Tondela, will be hoping to add to his five senior caps for Venezuela. His country are currently rock bottom in the CONMEBOL qualification table. They face Peru on Thursday 23rd March and Chile on Tuesday 28th March.

could win his first senior cap for Brazil this week. The 23-year old was originally selected for last summer's Copa América, but he was cruelly ruled out by a muscular injury. CONMEBOL group leaders Brazil will contest World Cup qualifiers against Uruguay on Thursday 23rd March and Paraguay on Tuesday 28th March.

André Carrillo
returned to the international fold last November, after an absence of over a year. Peru will need to take points from Venezuela (Thursday 23rd March) and Uruguay (Tuesday 28th March) to keep their faint hopes of World Cup qualification alive.

Having featured sparingly for Benfica in recent weeks, Raúl Jiménez would benefit from some game-time on the international stage. Mexico play World Cup qualifiers against Costa Rica (Friday 24th March) and Trinidad & Tobago (Tuesday 28th March).

Carlos Ponck could make his international debut this week for Cape Verde, who meet Luxembourg in a friendly on Tuesday 28th March. The 22-year old centre-back or defensive midfielder is currently on loan at GD Chaves. 

Fresh from his crucial goal for Vitória de Setúbal against FC Porto, João Carvalho has linked up with the Portugal under-21 squad ahead of their matches against Norway in Estoril (Friday 24th March) and Germany in Stuttgart (Tuesday 28th March).

Emílio Peixe has called up no fewer than eight Benfica players for the 'Four Nations' tournament in France this week: Aurélio Buta, Diogo Gonçalves, Francisco Ferreira, Heriberto Tavares, Pedro Amaral, Pedro Rodrigues, Rúben Dias and Yuri Ribeiro. No other club has contributed more than three players. Portugal will do battle with England, Senegal and France on Thursday, Saturday and Tuesday, respectively.

January signing Pedro Pereira has been selected by Hélio Sousa for the 'Elite Round' of qualification for Euro 2017. Besides Pereira, there were call-ups for six Benfica players: Florentino Luís, Gedson Fernandes, Hélder Baldé, João Filipe, Zé Gomes and Mesque Dju. Portugal will play Croatia on Thursday, Turkey on Saturday, and Poland on Tuesday. Portugal's games will be played at the stadiums of Paços de Ferreira and Gil Vicente. The winners of Group 4 will advance to next summer's tournament in Georgia. 

It will be a case of friends reunited in Northern Portugal, as Branimir Kalaica's Croatia were also drawn in Group 4. After their opener against Portugal, Croatia face Poland on Saturday and Turkey on Tuesday.

Andrija Živković
's Serbia will contest friendlies against Sweden (Friday 24th March) and Slovakia (Tuesday 28th March). Many had expected the 20-year old - who already has five full international caps - to be included in Slavoljub Muslin's senior squad.

Serbia’s under-20 side play Slovakia on Wednesday 22nd March and Ukraine on Tuesday 28th March. Luka Jović is among the players that have been selected.