Simplify the following text for a Grade 9 native English-speaking person.
Original: Keisi is known as an excellent header and as a winner who scores crucial goals when needed ( such as the equalizer to Hapoel Tel Aviv on 2001 or the goal vs Sturm Graz which secure Haifa 's appearance in the group stage of the champions league ) .
Simplified: Keisi was playing as a Left Back ( defender ) , and he was known as a great header and as a winner that scores crucial goals when needed ( such as the equalizer to Hapoel Tel Aviv or the goal that he scored against Sturm Graz , a goal that gave Maccabi Haifa F.C. the way to the UEFA Champions League group table .