Definition: In this task, you will be presented with a passage and have to answer a question based on your understanding of the events inferred from the passage. Try to find the best answer that is most likely to fill in "_". Note that the URLs in the text have been replaced with [Link].
Input: Slaven Bilic has warned his West Ham side to wise up to the tricks of European football after a second player was sent off for an off-the-ball challenge. James Tomkins was dismissed as the Hammers clung on to their Europa League dream by their fingertips in sweltering heat as they narrowly beat Malta’s Birkirkana on penalties in the return leg of their second-round qualifying tie. Diego Poyet proved the hero as he coolly scored the decisive spot-kick to give West Ham a 5-3 shootout victory after the game was forced into extra-time with both sides a man down. The Londoners will now face FC Astra in the next round but the likelihood of a trip to Romania appeared slim after a first half which saw them reduced to 10 men and behind to a Fabrizio Miccoli goal.Fabrizio Miccoli gave Birkirkara a lead on the night in the 14th minute before James Tomkins was sent offTomkins saw red following a tussle with Nikola Vukanac, although it appeared a harsh decisionWest Ham re-grouped but didn't have a firm grip until extra time when Matias Mazzetti was dismissedDiego Poyet netted the winning penalty for Slaven Bilic's side who now face Astra Giurgiu in round three 
 Question:_ knows his side cannot afford to keep putting themselves in situations like that after Diafro Sakho was dismissed for a similar offence in the previous round against Lusitans.

Slaven Bilic