What happened: Webber and his wife Ann began managing Oscar Piastri in 2019. Piastri and Webber said they mutually agreed to end the arrangement.

Why it matters: Webber helped guide Piastri's move from Alpine to a McLaren race seat for 2023. The split leaves Piastri to establish a new structure for career and commercial decisions.

What to watch: Piastri's next management arrangement remains to be announced.