Simplify the following text for a Grade 4 native English-speaking person.
Original: The leap was wind assisted and did not count for record purposes , but it was a sign of things to come as he capped an unbeaten year with a historic gold medal performance at the World Championships , in which he broke the world record twice in the same meet .
Simplified: The leap was wind assisted and did not count for record purposes . But it was a sign of things to come as he capped an unbeaten year .