Vladimir Coufal says West Ham United's winning mentality is growing 'match-by-match'.
The Irons have won 32 Premier League points out of 45 in the calendar year of 2021, which puts them in fourth-place on the table.
Speaking to the club's website, Coufal said: "I was really surprised by how the guys here keep training after the session ends, because I was used to, after a session, going back to the changing room or playing with the guys games like football tennis or something.
"Here, the guys make sure that they stay on the pitch or keep improving their finishing or crossing.
"I think our winning mentality is rising match-by-match and we know that it's important to keep going and keep improving."